Home / 10,691.18-14,755.20-6,217.28

Finding the Fourth Proportional to 10,691.18, 14,755.20 and 6,217.28

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Solution

The fourth proportional to 10,691.18, 14,755.20 and 6,217.28 is: 8,580.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,691.18 : 14,755.20 = 6,217.28 : x
  2. Step 2: Convert to fraction form
    10,691.18/14,755.20 = 6,217.28/x
  3. Step 3: Cross multiply
    10,691.18x = 14,755.20 × 6,217.28
  4. Step 4: Simplify right side
    10,691.18x = 91,737,209.86
  5. Step 5: Solve for x
    x = 91,737,209.86/10,691.18
  6. Step 6: Final answer
    x = 8,580.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.