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Finding the Fourth Proportional to 18,508.76, 27,738.98 and 16,163.20

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Solution

The fourth proportional to 18,508.76, 27,738.98 and 16,163.20 is: 24,223.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,508.76 : 27,738.98 = 16,163.20 : x
  2. Step 2: Convert to fraction form
    18,508.76/27,738.98 = 16,163.20/x
  3. Step 3: Cross multiply
    18,508.76x = 27,738.98 × 16,163.20
  4. Step 4: Simplify right side
    18,508.76x = 448,350,681.54
  5. Step 5: Solve for x
    x = 448,350,681.54/18,508.76
  6. Step 6: Final answer
    x = 24,223.70

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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.