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Finding the Fourth Proportional to 18,062.88, 27,089.52 and 15,142.56

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Solution

The fourth proportional to 18,062.88, 27,089.52 and 15,142.56 is: 22,709.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,062.88 : 27,089.52 = 15,142.56 : x
  2. Step 2: Convert to fraction form
    18,062.88/27,089.52 = 15,142.56/x
  3. Step 3: Cross multiply
    18,062.88x = 27,089.52 × 15,142.56
  4. Step 4: Simplify right side
    18,062.88x = 410,204,681.97
  5. Step 5: Solve for x
    x = 410,204,681.97/18,062.88
  6. Step 6: Final answer
    x = 22,709.82

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1.5x scale

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.