Home / 20,958.24-28,922.76-11,398.08

Finding the Fourth Proportional to 20,958.24, 28,922.76 and 11,398.08

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Solution

The fourth proportional to 20,958.24, 28,922.76 and 11,398.08 is: 15,729.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958.24 : 28,922.76 = 11,398.08 : x
  2. Step 2: Convert to fraction form
    20,958.24/28,922.76 = 11,398.08/x
  3. Step 3: Cross multiply
    20,958.24x = 28,922.76 × 11,398.08
  4. Step 4: Simplify right side
    20,958.24x = 329,663,932.30
  5. Step 5: Solve for x
    x = 329,663,932.30/20,958.24
  6. Step 6: Final answer
    x = 15,729.56

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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.