Home / 15,174.27-20,940.12-8,459.88

Finding the Fourth Proportional to 15,174.27, 20,940.12 and 8,459.88

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Solution

The fourth proportional to 15,174.27, 20,940.12 and 8,459.88 is: 11,674.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,174.27 : 20,940.12 = 8,459.88 : x
  2. Step 2: Convert to fraction form
    15,174.27/20,940.12 = 8,459.88/x
  3. Step 3: Cross multiply
    15,174.27x = 20,940.12 × 8,459.88
  4. Step 4: Simplify right side
    15,174.27x = 177,150,823.86
  5. Step 5: Solve for x
    x = 177,150,823.86/15,174.27
  6. Step 6: Final answer
    x = 11,674.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.