Home / 20,566.38-28,378.55-11,613.71

Finding the Fourth Proportional to 20,566.38, 28,378.55 and 11,613.71

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Solution

The fourth proportional to 20,566.38, 28,378.55 and 11,613.71 is: 16,025.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,566.38 : 28,378.55 = 11,613.71 : x
  2. Step 2: Convert to fraction form
    20,566.38/28,378.55 = 11,613.71/x
  3. Step 3: Cross multiply
    20,566.38x = 28,378.55 × 11,613.71
  4. Step 4: Simplify right side
    20,566.38x = 329,580,349.90
  5. Step 5: Solve for x
    x = 329,580,349.90/20,566.38
  6. Step 6: Final answer
    x = 16,025.20

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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.