Home / 20,339.97-28,049.45-15,862.10

Finding the Fourth Proportional to 20,339.97, 28,049.45 and 15,862.10

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Solution

The fourth proportional to 20,339.97, 28,049.45 and 15,862.10 is: 21,874.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,339.97 : 28,049.45 = 15,862.10 : x
  2. Step 2: Convert to fraction form
    20,339.97/28,049.45 = 15,862.10/x
  3. Step 3: Cross multiply
    20,339.97x = 28,049.45 × 15,862.10
  4. Step 4: Simplify right side
    20,339.97x = 444,922,961.29
  5. Step 5: Solve for x
    x = 444,922,961.29/20,339.97
  6. Step 6: Final answer
    x = 21,874.32

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1.5x scale

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.