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Finding the Fourth Proportional to 28,117.80, 42,192.90 and 10,600.20

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Solution

The fourth proportional to 28,117.80, 42,192.90 and 10,600.20 is: 15,906.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.80 : 42,192.90 = 10,600.20 : x
  2. Step 2: Convert to fraction form
    28,117.80/42,192.90 = 10,600.20/x
  3. Step 3: Cross multiply
    28,117.80x = 42,192.90 × 10,600.20
  4. Step 4: Simplify right side
    28,117.80x = 447,253,178.58
  5. Step 5: Solve for x
    x = 447,253,178.58/28,117.80
  6. Step 6: Final answer
    x = 15,906.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.