Home / 27,879.49-38,472.65-15,942.52

Finding the Fourth Proportional to 27,879.49, 38,472.65 and 15,942.52

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Solution

The fourth proportional to 27,879.49, 38,472.65 and 15,942.52 is: 22,000.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,879.49 : 38,472.65 = 15,942.52 : x
  2. Step 2: Convert to fraction form
    27,879.49/38,472.65 = 15,942.52/x
  3. Step 3: Cross multiply
    27,879.49x = 38,472.65 × 15,942.52
  4. Step 4: Simplify right side
    27,879.49x = 613,350,799.71
  5. Step 5: Solve for x
    x = 613,350,799.71/27,879.49
  6. Step 6: Final answer
    x = 22,000.08

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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.