Home / 31,988.34-47,982.51-8,614.77

Finding the Fourth Proportional to 31,988.34, 47,982.51 and 8,614.77

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Solution

The fourth proportional to 31,988.34, 47,982.51 and 8,614.77 is: 12,922.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,988.34 : 47,982.51 = 8,614.77 : x
  2. Step 2: Convert to fraction form
    31,988.34/47,982.51 = 8,614.77/x
  3. Step 3: Cross multiply
    31,988.34x = 47,982.51 × 8,614.77
  4. Step 4: Simplify right side
    31,988.34x = 413,358,287.67
  5. Step 5: Solve for x
    x = 413,358,287.67/31,988.34
  6. Step 6: Final answer
    x = 12,922.16

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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.