Home / 31,561.50-47,342.61-8,186.52

Finding the Fourth Proportional to 31,561.50, 47,342.61 and 8,186.52

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Solution

The fourth proportional to 31,561.50, 47,342.61 and 8,186.52 is: 12,279.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,561.50 : 47,342.61 = 8,186.52 : x
  2. Step 2: Convert to fraction form
    31,561.50/47,342.61 = 8,186.52/x
  3. Step 3: Cross multiply
    31,561.50x = 47,342.61 × 8,186.52
  4. Step 4: Simplify right side
    31,561.50x = 387,571,223.62
  5. Step 5: Solve for x
    x = 387,571,223.62/31,561.50
  6. Step 6: Final answer
    x = 12,279.87

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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.