Home / 31,980.76-47,974.44-12,275.80

Finding the Fourth Proportional to 31,980.76, 47,974.44 and 12,275.80

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Solution

The fourth proportional to 31,980.76, 47,974.44 and 12,275.80 is: 18,414.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,980.76 : 47,974.44 = 12,275.80 : x
  2. Step 2: Convert to fraction form
    31,980.76/47,974.44 = 12,275.80/x
  3. Step 3: Cross multiply
    31,980.76x = 47,974.44 × 12,275.80
  4. Step 4: Simplify right side
    31,980.76x = 588,924,630.55
  5. Step 5: Solve for x
    x = 588,924,630.55/31,980.76
  6. Step 6: Final answer
    x = 18,414.97

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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.