Home / 31,825.78-47,757.17-13,107.70

Finding the Fourth Proportional to 31,825.78, 47,757.17 and 13,107.70

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Solution

The fourth proportional to 31,825.78, 47,757.17 and 13,107.70 is: 19,669.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,825.78 : 47,757.17 = 13,107.70 : x
  2. Step 2: Convert to fraction form
    31,825.78/47,757.17 = 13,107.70/x
  3. Step 3: Cross multiply
    31,825.78x = 47,757.17 × 13,107.70
  4. Step 4: Simplify right side
    31,825.78x = 625,986,657.21
  5. Step 5: Solve for x
    x = 625,986,657.21/31,825.78
  6. Step 6: Final answer
    x = 19,669.17

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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.