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Finding the Fourth Proportional to 28,092.80, 42,139.20 and 24,291.20

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Solution

The fourth proportional to 28,092.80, 42,139.20 and 24,291.20 is: 36,436.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,092.80 : 42,139.20 = 24,291.20 : x
  2. Step 2: Convert to fraction form
    28,092.80/42,139.20 = 24,291.20/x
  3. Step 3: Cross multiply
    28,092.80x = 42,139.20 × 24,291.20
  4. Step 4: Simplify right side
    28,092.80x = 1,023,611,735.04
  5. Step 5: Solve for x
    x = 1,023,611,735.04/28,092.80
  6. Step 6: Final answer
    x = 36,436.80

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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.