Home / 21,101.78-31,668.24-10,008.44

Finding the Fourth Proportional to 21,101.78, 31,668.24 and 10,008.44

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Solution

The fourth proportional to 21,101.78, 31,668.24 and 10,008.44 is: 15,020.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,101.78 : 31,668.24 = 10,008.44 : x
  2. Step 2: Convert to fraction form
    21,101.78/31,668.24 = 10,008.44/x
  3. Step 3: Cross multiply
    21,101.78x = 31,668.24 × 10,008.44
  4. Step 4: Simplify right side
    21,101.78x = 316,949,679.95
  5. Step 5: Solve for x
    x = 316,949,679.95/21,101.78
  6. Step 6: Final answer
    x = 15,020.04

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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.