Home / 31,721.36-47,540.70-17,680.82

Finding the Fourth Proportional to 31,721.36, 47,540.70 and 17,680.82

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Solution

The fourth proportional to 31,721.36, 47,540.70 and 17,680.82 is: 26,498.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,721.36 : 47,540.70 = 17,680.82 : x
  2. Step 2: Convert to fraction form
    31,721.36/47,540.70 = 17,680.82/x
  3. Step 3: Cross multiply
    31,721.36x = 47,540.70 × 17,680.82
  4. Step 4: Simplify right side
    31,721.36x = 840,558,321.67
  5. Step 5: Solve for x
    x = 840,558,321.67/31,721.36
  6. Step 6: Final answer
    x = 26,498.18

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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.