Home / 31,450.06-47,182.38-13,920.04

Finding the Fourth Proportional to 31,450.06, 47,182.38 and 13,920.04

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Solution

The fourth proportional to 31,450.06, 47,182.38 and 13,920.04 is: 20,883.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,450.06 : 47,182.38 = 13,920.04 : x
  2. Step 2: Convert to fraction form
    31,450.06/47,182.38 = 13,920.04/x
  3. Step 3: Cross multiply
    31,450.06x = 47,182.38 × 13,920.04
  4. Step 4: Simplify right side
    31,450.06x = 656,780,616.90
  5. Step 5: Solve for x
    x = 656,780,616.90/31,450.06
  6. Step 6: Final answer
    x = 20,883.29

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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.