Home / 21,231.04-31,882.20-15,966.04

Finding the Fourth Proportional to 21,231.04, 31,882.20 and 15,966.04

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Solution

The fourth proportional to 21,231.04, 31,882.20 and 15,966.04 is: 23,975.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,231.04 : 31,882.20 = 15,966.04 : x
  2. Step 2: Convert to fraction form
    21,231.04/31,882.20 = 15,966.04/x
  3. Step 3: Cross multiply
    21,231.04x = 31,882.20 × 15,966.04
  4. Step 4: Simplify right side
    21,231.04x = 509,032,480.49
  5. Step 5: Solve for x
    x = 509,032,480.49/21,231.04
  6. Step 6: Final answer
    x = 23,975.86

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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.