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Finding the Fourth Proportional to 13,832.56, 20,731.56 and 6,909.04

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Solution

The fourth proportional to 13,832.56, 20,731.56 and 6,909.04 is: 10,354.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,832.56 : 20,731.56 = 6,909.04 : x
  2. Step 2: Convert to fraction form
    13,832.56/20,731.56 = 6,909.04/x
  3. Step 3: Cross multiply
    13,832.56x = 20,731.56 × 6,909.04
  4. Step 4: Simplify right side
    13,832.56x = 143,235,177.30
  5. Step 5: Solve for x
    x = 143,235,177.30/13,832.56
  6. Step 6: Final answer
    x = 10,354.93

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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.