Home / 20,340.17-28,049.71-15,862.28

Finding the Fourth Proportional to 20,340.17, 28,049.71 and 15,862.28

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Solution

The fourth proportional to 20,340.17, 28,049.71 and 15,862.28 is: 21,874.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,340.17 : 28,049.71 = 15,862.28 : x
  2. Step 2: Convert to fraction form
    20,340.17/28,049.71 = 15,862.28/x
  3. Step 3: Cross multiply
    20,340.17x = 28,049.71 × 15,862.28
  4. Step 4: Simplify right side
    20,340.17x = 444,932,353.94
  5. Step 5: Solve for x
    x = 444,932,353.94/20,340.17
  6. Step 6: Final answer
    x = 21,874.56

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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.