Home / 13,132.91-19,687.55-8,917.61

Finding the Fourth Proportional to 13,132.91, 19,687.55 and 8,917.61

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Solution

The fourth proportional to 13,132.91, 19,687.55 and 8,917.61 is: 13,368.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,132.91 : 19,687.55 = 8,917.61 : x
  2. Step 2: Convert to fraction form
    13,132.91/19,687.55 = 8,917.61/x
  3. Step 3: Cross multiply
    13,132.91x = 19,687.55 × 8,917.61
  4. Step 4: Simplify right side
    13,132.91x = 175,565,749.73
  5. Step 5: Solve for x
    x = 175,565,749.73/13,132.91
  6. Step 6: Final answer
    x = 13,368.38

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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.