Home / 20,154.28-30,232.10-7,672.43

Finding the Fourth Proportional to 20,154.28, 30,232.10 and 7,672.43

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Solution

The fourth proportional to 20,154.28, 30,232.10 and 7,672.43 is: 11,508.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,154.28 : 30,232.10 = 7,672.43 : x
  2. Step 2: Convert to fraction form
    20,154.28/30,232.10 = 7,672.43/x
  3. Step 3: Cross multiply
    20,154.28x = 30,232.10 × 7,672.43
  4. Step 4: Simplify right side
    20,154.28x = 231,953,708.22
  5. Step 5: Solve for x
    x = 231,953,708.22/20,154.28
  6. Step 6: Final answer
    x = 11,508.91

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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.