Home / 12,487.28-18,715.20-10,923.56

Finding the Fourth Proportional to 12,487.28, 18,715.20 and 10,923.56

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Solution

The fourth proportional to 12,487.28, 18,715.20 and 10,923.56 is: 16,371.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,487.28 : 18,715.20 = 10,923.56 : x
  2. Step 2: Convert to fraction form
    12,487.28/18,715.20 = 10,923.56/x
  3. Step 3: Cross multiply
    12,487.28x = 18,715.20 × 10,923.56
  4. Step 4: Simplify right side
    12,487.28x = 204,436,610.11
  5. Step 5: Solve for x
    x = 204,436,610.11/12,487.28
  6. Step 6: Final answer
    x = 16,371.59

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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.