Home / 28,421.41-42,630.60-8,699.98

Finding the Fourth Proportional to 28,421.41, 42,630.60 and 8,699.98

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Solution

The fourth proportional to 28,421.41, 42,630.60 and 8,699.98 is: 13,049.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,421.41 : 42,630.60 = 8,699.98 : x
  2. Step 2: Convert to fraction form
    28,421.41/42,630.60 = 8,699.98/x
  3. Step 3: Cross multiply
    28,421.41x = 42,630.60 × 8,699.98
  4. Step 4: Simplify right side
    28,421.41x = 370,885,367.39
  5. Step 5: Solve for x
    x = 370,885,367.39/28,421.41
  6. Step 6: Final answer
    x = 13,049.51

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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.