Home / 20,966.72-28,933.82-15,613.10

Finding the Fourth Proportional to 20,966.72, 28,933.82 and 15,613.10

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Solution

The fourth proportional to 20,966.72, 28,933.82 and 15,613.10 is: 21,545.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,966.72 : 28,933.82 = 15,613.10 : x
  2. Step 2: Convert to fraction form
    20,966.72/28,933.82 = 15,613.10/x
  3. Step 3: Cross multiply
    20,966.72x = 28,933.82 × 15,613.10
  4. Step 4: Simplify right side
    20,966.72x = 451,746,619.31
  5. Step 5: Solve for x
    x = 451,746,619.31/20,966.72
  6. Step 6: Final answer
    x = 21,545.89

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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.