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Finding the Fourth Proportional to 29,129.80, 43,665.90 and 11,576.20

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Solution

The fourth proportional to 29,129.80, 43,665.90 and 11,576.20 is: 17,352.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,129.80 : 43,665.90 = 11,576.20 : x
  2. Step 2: Convert to fraction form
    29,129.80/43,665.90 = 11,576.20/x
  3. Step 3: Cross multiply
    29,129.80x = 43,665.90 × 11,576.20
  4. Step 4: Simplify right side
    29,129.80x = 505,485,191.58
  5. Step 5: Solve for x
    x = 505,485,191.58/29,129.80
  6. Step 6: Final answer
    x = 17,352.85

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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.