Home / 15,122.27-20,867.55-8,407.49

Finding the Fourth Proportional to 15,122.27, 20,867.55 and 8,407.49

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Solution

The fourth proportional to 15,122.27, 20,867.55 and 8,407.49 is: 11,601.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,122.27 : 20,867.55 = 8,407.49 : x
  2. Step 2: Convert to fraction form
    15,122.27/20,867.55 = 8,407.49/x
  3. Step 3: Cross multiply
    15,122.27x = 20,867.55 × 8,407.49
  4. Step 4: Simplify right side
    15,122.27x = 175,443,613.61
  5. Step 5: Solve for x
    x = 175,443,613.61/15,122.27
  6. Step 6: Final answer
    x = 11,601.68

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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.