Home / 15,613.20-21,540.20-9,634.52

Finding the Fourth Proportional to 15,613.20, 21,540.20 and 9,634.52

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Solution

The fourth proportional to 15,613.20, 21,540.20 and 9,634.52 is: 13,291.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,613.20 : 21,540.20 = 9,634.52 : x
  2. Step 2: Convert to fraction form
    15,613.20/21,540.20 = 9,634.52/x
  3. Step 3: Cross multiply
    15,613.20x = 21,540.20 × 9,634.52
  4. Step 4: Simplify right side
    15,613.20x = 207,529,487.70
  5. Step 5: Solve for x
    x = 207,529,487.70/15,613.20
  6. Step 6: Final answer
    x = 13,291.93

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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.