Home / 20,730.59-28,608.50-11,299.13

Finding the Fourth Proportional to 20,730.59, 28,608.50 and 11,299.13

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Solution

The fourth proportional to 20,730.59, 28,608.50 and 11,299.13 is: 15,592.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,730.59 : 28,608.50 = 11,299.13 : x
  2. Step 2: Convert to fraction form
    20,730.59/28,608.50 = 11,299.13/x
  3. Step 3: Cross multiply
    20,730.59x = 28,608.50 × 11,299.13
  4. Step 4: Simplify right side
    20,730.59x = 323,251,160.61
  5. Step 5: Solve for x
    x = 323,251,160.61/20,730.59
  6. Step 6: Final answer
    x = 15,592.96

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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.