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Finding the Fourth Proportional to 28,492.47, 42,737.49 and 8,770.19

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Solution

The fourth proportional to 28,492.47, 42,737.49 and 8,770.19 is: 13,154.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,492.47 : 42,737.49 = 8,770.19 : x
  2. Step 2: Convert to fraction form
    28,492.47/42,737.49 = 8,770.19/x
  3. Step 3: Cross multiply
    28,492.47x = 42,737.49 × 8,770.19
  4. Step 4: Simplify right side
    28,492.47x = 374,815,693.74
  5. Step 5: Solve for x
    x = 374,815,693.74/28,492.47
  6. Step 6: Final answer
    x = 13,154.90

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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.