Home / 31,353.26-47,031.33-7,979.90

Finding the Fourth Proportional to 31,353.26, 47,031.33 and 7,979.90

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Solution

The fourth proportional to 31,353.26, 47,031.33 and 7,979.90 is: 11,970.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,353.26 : 47,031.33 = 7,979.90 : x
  2. Step 2: Convert to fraction form
    31,353.26/47,031.33 = 7,979.90/x
  3. Step 3: Cross multiply
    31,353.26x = 47,031.33 × 7,979.90
  4. Step 4: Simplify right side
    31,353.26x = 375,305,310.27
  5. Step 5: Solve for x
    x = 375,305,310.27/31,353.26
  6. Step 6: Final answer
    x = 11,970.22

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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.