Home / 31,721.72-47,517.94-15,031.16

Finding the Fourth Proportional to 31,721.72, 47,517.94 and 15,031.16

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Solution

The fourth proportional to 31,721.72, 47,517.94 and 15,031.16 is: 22,516.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,721.72 : 47,517.94 = 15,031.16 : x
  2. Step 2: Convert to fraction form
    31,721.72/47,517.94 = 15,031.16/x
  3. Step 3: Cross multiply
    31,721.72x = 47,517.94 × 15,031.16
  4. Step 4: Simplify right side
    31,721.72x = 714,249,759.01
  5. Step 5: Solve for x
    x = 714,249,759.01/31,721.72
  6. Step 6: Final answer
    x = 22,516.11

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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.