Home / 20,930.88-28,882.80-11,497.08

Finding the Fourth Proportional to 20,930.88, 28,882.80 and 11,497.08

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Solution

The fourth proportional to 20,930.88, 28,882.80 and 11,497.08 is: 15,864.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,930.88 : 28,882.80 = 11,497.08 : x
  2. Step 2: Convert to fraction form
    20,930.88/28,882.80 = 11,497.08/x
  3. Step 3: Cross multiply
    20,930.88x = 28,882.80 × 11,497.08
  4. Step 4: Simplify right side
    20,930.88x = 332,067,862.22
  5. Step 5: Solve for x
    x = 332,067,862.22/20,930.88
  6. Step 6: Final answer
    x = 15,864.97

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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.