Home / 31,680.48-47,531.44-11,964.72

Finding the Fourth Proportional to 31,680.48, 47,531.44 and 11,964.72

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Solution

The fourth proportional to 31,680.48, 47,531.44 and 11,964.72 is: 17,951.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,680.48 : 47,531.44 = 11,964.72 : x
  2. Step 2: Convert to fraction form
    31,680.48/47,531.44 = 11,964.72/x
  3. Step 3: Cross multiply
    31,680.48x = 47,531.44 × 11,964.72
  4. Step 4: Simplify right side
    31,680.48x = 568,700,370.80
  5. Step 5: Solve for x
    x = 568,700,370.80/31,680.48
  6. Step 6: Final answer
    x = 17,951.13

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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.