Home / 28,762,625.30-42,986,336.57-20,997,890.98

Finding the Fourth Proportional to 28,762,625.30, 42,986,336.57 and 20,997,890.98

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Solution

The fourth proportional to 28,762,625.30, 42,986,336.57 and 20,997,890.98 is: 31,381,781.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,762,625.30 : 42,986,336.57 = 20,997,890.98 : x
  2. Step 2: Convert to fraction form
    28,762,625.30/42,986,336.57 = 20,997,890.98/x
  3. Step 3: Cross multiply
    28,762,625.30x = 42,986,336.57 × 20,997,890.98
  4. Step 4: Simplify right side
    28,762,625.30x = 902,622,408,926,447.12
  5. Step 5: Solve for x
    x = 902,622,408,926,447.12/28,762,625.30
  6. Step 6: Final answer
    x = 31,381,781.03

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.