Home / 20,694.75-31,031.19-9,001.59

Finding the Fourth Proportional to 20,694.75, 31,031.19 and 9,001.59

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Solution

The fourth proportional to 20,694.75, 31,031.19 and 9,001.59 is: 13,497.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,694.75 : 31,031.19 = 9,001.59 : x
  2. Step 2: Convert to fraction form
    20,694.75/31,031.19 = 9,001.59/x
  3. Step 3: Cross multiply
    20,694.75x = 31,031.19 × 9,001.59
  4. Step 4: Simplify right side
    20,694.75x = 279,330,049.59
  5. Step 5: Solve for x
    x = 279,330,049.59/20,694.75
  6. Step 6: Final answer
    x = 13,497.63

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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.