Home / 20,932.85-28,887.33-11,501.42

Finding the Fourth Proportional to 20,932.85, 28,887.33 and 11,501.42

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Solution

The fourth proportional to 20,932.85, 28,887.33 and 11,501.42 is: 15,871.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.85 : 28,887.33 = 11,501.42 : x
  2. Step 2: Convert to fraction form
    20,932.85/28,887.33 = 11,501.42/x
  3. Step 3: Cross multiply
    20,932.85x = 28,887.33 × 11,501.42
  4. Step 4: Simplify right side
    20,932.85x = 332,245,170.57
  5. Step 5: Solve for x
    x = 332,245,170.57/20,932.85
  6. Step 6: Final answer
    x = 15,871.95

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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.