Home / 19,921.40-29,882.10-5,881.62

Finding the Fourth Proportional to 19,921.40, 29,882.10 and 5,881.62

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Solution

The fourth proportional to 19,921.40, 29,882.10 and 5,881.62 is: 8,822.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,921.40 : 29,882.10 = 5,881.62 : x
  2. Step 2: Convert to fraction form
    19,921.40/29,882.10 = 5,881.62/x
  3. Step 3: Cross multiply
    19,921.40x = 29,882.10 × 5,881.62
  4. Step 4: Simplify right side
    19,921.40x = 175,755,157.00
  5. Step 5: Solve for x
    x = 175,755,157.00/19,921.40
  6. Step 6: Final answer
    x = 8,822.43

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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.