Home / 28,753.38-39,680.55-15,657.24

Finding the Fourth Proportional to 28,753.38, 39,680.55 and 15,657.24

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Solution

The fourth proportional to 28,753.38, 39,680.55 and 15,657.24 is: 21,607.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,753.38 : 39,680.55 = 15,657.24 : x
  2. Step 2: Convert to fraction form
    28,753.38/39,680.55 = 15,657.24/x
  3. Step 3: Cross multiply
    28,753.38x = 39,680.55 × 15,657.24
  4. Step 4: Simplify right side
    28,753.38x = 621,288,043.48
  5. Step 5: Solve for x
    x = 621,288,043.48/28,753.38
  6. Step 6: Final answer
    x = 21,607.48

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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.