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Finding the Fourth Proportional to 20,591.68, 30,892.98 and 10,728.04

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Solution

The fourth proportional to 20,591.68, 30,892.98 and 10,728.04 is: 16,094.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,591.68 : 30,892.98 = 10,728.04 : x
  2. Step 2: Convert to fraction form
    20,591.68/30,892.98 = 10,728.04/x
  3. Step 3: Cross multiply
    20,591.68x = 30,892.98 × 10,728.04
  4. Step 4: Simplify right side
    20,591.68x = 331,421,125.16
  5. Step 5: Solve for x
    x = 331,421,125.16/20,591.68
  6. Step 6: Final answer
    x = 16,094.90

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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.