Home / 31,940.85-47,920.52-13,217.43

Finding the Fourth Proportional to 31,940.85, 47,920.52 and 13,217.43

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Solution

The fourth proportional to 31,940.85, 47,920.52 and 13,217.43 is: 19,829.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,940.85 : 47,920.52 = 13,217.43 : x
  2. Step 2: Convert to fraction form
    31,940.85/47,920.52 = 13,217.43/x
  3. Step 3: Cross multiply
    31,940.85x = 47,920.52 × 13,217.43
  4. Step 4: Simplify right side
    31,940.85x = 633,386,151.71
  5. Step 5: Solve for x
    x = 633,386,151.71/31,940.85
  6. Step 6: Final answer
    x = 19,829.97

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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.