Home / 28,008,087.40-42,012,131.10-18,436,349.80

Finding the Fourth Proportional to 28,008,087.40, 42,012,131.10 and 18,436,349.80

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Solution

The fourth proportional to 28,008,087.40, 42,012,131.10 and 18,436,349.80 is: 27,654,524.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,008,087.40 : 42,012,131.10 = 18,436,349.80 : x
  2. Step 2: Convert to fraction form
    28,008,087.40/42,012,131.10 = 18,436,349.80/x
  3. Step 3: Cross multiply
    28,008,087.40x = 42,012,131.10 × 18,436,349.80
  4. Step 4: Simplify right side
    28,008,087.40x = 774,550,344,803,058.88
  5. Step 5: Solve for x
    x = 774,550,344,803,058.88/28,008,087.40
  6. Step 6: Final answer
    x = 27,654,524.70

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.