Home / 29,138.55-43,707.75-12,487.78

Finding the Fourth Proportional to 29,138.55, 43,707.75 and 12,487.78

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Solution

The fourth proportional to 29,138.55, 43,707.75 and 12,487.78 is: 18,731.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,138.55 : 43,707.75 = 12,487.78 : x
  2. Step 2: Convert to fraction form
    29,138.55/43,707.75 = 12,487.78/x
  3. Step 3: Cross multiply
    29,138.55x = 43,707.75 × 12,487.78
  4. Step 4: Simplify right side
    29,138.55x = 545,812,766.30
  5. Step 5: Solve for x
    x = 545,812,766.30/29,138.55
  6. Step 6: Final answer
    x = 18,731.64

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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.