Home / 27,789.30-38,350.20-15,854.46

Finding the Fourth Proportional to 27,789.30, 38,350.20 and 15,854.46

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Solution

The fourth proportional to 27,789.30, 38,350.20 and 15,854.46 is: 21,879.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,789.30 : 38,350.20 = 15,854.46 : x
  2. Step 2: Convert to fraction form
    27,789.30/38,350.20 = 15,854.46/x
  3. Step 3: Cross multiply
    27,789.30x = 38,350.20 × 15,854.46
  4. Step 4: Simplify right side
    27,789.30x = 608,021,711.89
  5. Step 5: Solve for x
    x = 608,021,711.89/27,789.30
  6. Step 6: Final answer
    x = 21,879.71

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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.