Home / 20,156.28-27,815.06-11,542.17

Finding the Fourth Proportional to 20,156.28, 27,815.06 and 11,542.17

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Solution

The fourth proportional to 20,156.28, 27,815.06 and 11,542.17 is: 15,927.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,156.28 : 27,815.06 = 11,542.17 : x
  2. Step 2: Convert to fraction form
    20,156.28/27,815.06 = 11,542.17/x
  3. Step 3: Cross multiply
    20,156.28x = 27,815.06 × 11,542.17
  4. Step 4: Simplify right side
    20,156.28x = 321,046,151.08
  5. Step 5: Solve for x
    x = 321,046,151.08/20,156.28
  6. Step 6: Final answer
    x = 15,927.85

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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.