Home / 20,407.41-30,614.36-8,720.73

Finding the Fourth Proportional to 20,407.41, 30,614.36 and 8,720.73

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Solution

The fourth proportional to 20,407.41, 30,614.36 and 8,720.73 is: 13,082.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,407.41 : 30,614.36 = 8,720.73 : x
  2. Step 2: Convert to fraction form
    20,407.41/30,614.36 = 8,720.73/x
  3. Step 3: Cross multiply
    20,407.41x = 30,614.36 × 8,720.73
  4. Step 4: Simplify right side
    20,407.41x = 266,979,524.08
  5. Step 5: Solve for x
    x = 266,979,524.08/20,407.41
  6. Step 6: Final answer
    x = 13,082.48

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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.