Home / 31,854.90-47,788.10-13,124.70

Finding the Fourth Proportional to 31,854.90, 47,788.10 and 13,124.70

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Solution

The fourth proportional to 31,854.90, 47,788.10 and 13,124.70 is: 19,689.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,854.90 : 47,788.10 = 13,124.70 : x
  2. Step 2: Convert to fraction form
    31,854.90/47,788.10 = 13,124.70/x
  3. Step 3: Cross multiply
    31,854.90x = 47,788.10 × 13,124.70
  4. Step 4: Simplify right side
    31,854.90x = 627,204,410.45
  5. Step 5: Solve for x
    x = 627,204,410.45/31,854.90
  6. Step 6: Final answer
    x = 19,689.42

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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.