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Finding the Fourth Proportional to 20,003.10, 29,970.81 and 8,892.78

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Solution

The fourth proportional to 20,003.10, 29,970.81 and 8,892.78 is: 13,324.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,003.10 : 29,970.81 = 8,892.78 : x
  2. Step 2: Convert to fraction form
    20,003.10/29,970.81 = 8,892.78/x
  3. Step 3: Cross multiply
    20,003.10x = 29,970.81 × 8,892.78
  4. Step 4: Simplify right side
    20,003.10x = 266,523,819.75
  5. Step 5: Solve for x
    x = 266,523,819.75/20,003.10
  6. Step 6: Final answer
    x = 13,324.13

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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.