Home / 20,255.20-27,952.11-11,302.61

Finding the Fourth Proportional to 20,255.20, 27,952.11 and 11,302.61

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Solution

The fourth proportional to 20,255.20, 27,952.11 and 11,302.61 is: 15,597.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,255.20 : 27,952.11 = 11,302.61 : x
  2. Step 2: Convert to fraction form
    20,255.20/27,952.11 = 11,302.61/x
  3. Step 3: Cross multiply
    20,255.20x = 27,952.11 × 11,302.61
  4. Step 4: Simplify right side
    20,255.20x = 315,931,658.25
  5. Step 5: Solve for x
    x = 315,931,658.25/20,255.20
  6. Step 6: Final answer
    x = 15,597.56

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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.