Home / 21,180.24-31,747.20-11,295

Finding the Fourth Proportional to 21,180.24, 31,747.20 and 11,295

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Solution

The fourth proportional to 21,180.24, 31,747.20 and 11,295 is: 16,930.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.24 : 31,747.20 = 11,295 : x
  2. Step 2: Convert to fraction form
    21,180.24/31,747.20 = 11,295/x
  3. Step 3: Cross multiply
    21,180.24x = 31,747.20 × 11,295
  4. Step 4: Simplify right side
    21,180.24x = 358,584,624
  5. Step 5: Solve for x
    x = 358,584,624/21,180.24
  6. Step 6: Final answer
    x = 16,930.15

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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.