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Finding the Fourth Proportional to 29,139.62, 43,715.91 and 8,361.54

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Solution

The fourth proportional to 29,139.62, 43,715.91 and 8,361.54 is: 12,544.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,139.62 : 43,715.91 = 8,361.54 : x
  2. Step 2: Convert to fraction form
    29,139.62/43,715.91 = 8,361.54/x
  3. Step 3: Cross multiply
    29,139.62x = 43,715.91 × 8,361.54
  4. Step 4: Simplify right side
    29,139.62x = 365,532,330.10
  5. Step 5: Solve for x
    x = 365,532,330.10/29,139.62
  6. Step 6: Final answer
    x = 12,544.17

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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.