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Finding the Fourth Proportional to 18,471.26, 27,711.76 and 5,324.70

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Solution

The fourth proportional to 18,471.26, 27,711.76 and 5,324.70 is: 7,988.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,471.26 : 27,711.76 = 5,324.70 : x
  2. Step 2: Convert to fraction form
    18,471.26/27,711.76 = 5,324.70/x
  3. Step 3: Cross multiply
    18,471.26x = 27,711.76 × 5,324.70
  4. Step 4: Simplify right side
    18,471.26x = 147,556,808.47
  5. Step 5: Solve for x
    x = 147,556,808.47/18,471.26
  6. Step 6: Final answer
    x = 7,988.45

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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.