Home / 31,437.82-47,172.93-13,920.04

Finding the Fourth Proportional to 31,437.82, 47,172.93 and 13,920.04

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Solution

The fourth proportional to 31,437.82, 47,172.93 and 13,920.04 is: 20,887.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,437.82 : 47,172.93 = 13,920.04 : x
  2. Step 2: Convert to fraction form
    31,437.82/47,172.93 = 13,920.04/x
  3. Step 3: Cross multiply
    31,437.82x = 47,172.93 × 13,920.04
  4. Step 4: Simplify right side
    31,437.82x = 656,649,072.52
  5. Step 5: Solve for x
    x = 656,649,072.52/31,437.82
  6. Step 6: Final answer
    x = 20,887.23

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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.