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Finding the Fourth Proportional to 43,612.76, 65,428.90 and 15,910.76

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Solution

The fourth proportional to 43,612.76, 65,428.90 and 15,910.76 is: 23,869.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,612.76 : 65,428.90 = 15,910.76 : x
  2. Step 2: Convert to fraction form
    43,612.76/65,428.90 = 15,910.76/x
  3. Step 3: Cross multiply
    43,612.76x = 65,428.90 × 15,910.76
  4. Step 4: Simplify right side
    43,612.76x = 1,041,023,524.96
  5. Step 5: Solve for x
    x = 1,041,023,524.96/43,612.76
  6. Step 6: Final answer
    x = 23,869.70

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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.