Home / 15,613.19-21,545.77-8,539.61

Finding the Fourth Proportional to 15,613.19, 21,545.77 and 8,539.61

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Solution

The fourth proportional to 15,613.19, 21,545.77 and 8,539.61 is: 11,784.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,613.19 : 21,545.77 = 8,539.61 : x
  2. Step 2: Convert to fraction form
    15,613.19/21,545.77 = 8,539.61/x
  3. Step 3: Cross multiply
    15,613.19x = 21,545.77 × 8,539.61
  4. Step 4: Simplify right side
    15,613.19x = 183,992,505.10
  5. Step 5: Solve for x
    x = 183,992,505.10/15,613.19
  6. Step 6: Final answer
    x = 11,784.43

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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.