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Finding the Fourth Proportional to 18,818.12, 28,227.78 and 6,974.87

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Solution

The fourth proportional to 18,818.12, 28,227.78 and 6,974.87 is: 10,462.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,818.12 : 28,227.78 = 6,974.87 : x
  2. Step 2: Convert to fraction form
    18,818.12/28,227.78 = 6,974.87/x
  3. Step 3: Cross multiply
    18,818.12x = 28,227.78 × 6,974.87
  4. Step 4: Simplify right side
    18,818.12x = 196,884,954.75
  5. Step 5: Solve for x
    x = 196,884,954.75/18,818.12
  6. Step 6: Final answer
    x = 10,462.52

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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.