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Finding the Fourth Proportional to 28,512.03, 42,755.81 and 9,793.95

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Solution

The fourth proportional to 28,512.03, 42,755.81 and 9,793.95 is: 14,686.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512.03 : 42,755.81 = 9,793.95 : x
  2. Step 2: Convert to fraction form
    28,512.03/42,755.81 = 9,793.95/x
  3. Step 3: Cross multiply
    28,512.03x = 42,755.81 × 9,793.95
  4. Step 4: Simplify right side
    28,512.03x = 418,748,002.60
  5. Step 5: Solve for x
    x = 418,748,002.60/28,512.03
  6. Step 6: Final answer
    x = 14,686.72

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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.