Home / 21,862.90-30,160.11-14,305.87

Finding the Fourth Proportional to 21,862.90, 30,160.11 and 14,305.87

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Solution

The fourth proportional to 21,862.90, 30,160.11 and 14,305.87 is: 19,735.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,862.90 : 30,160.11 = 14,305.87 : x
  2. Step 2: Convert to fraction form
    21,862.90/30,160.11 = 14,305.87/x
  3. Step 3: Cross multiply
    21,862.90x = 30,160.11 × 14,305.87
  4. Step 4: Simplify right side
    21,862.90x = 431,466,612.85
  5. Step 5: Solve for x
    x = 431,466,612.85/21,862.90
  6. Step 6: Final answer
    x = 19,735.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.