Home / 27,818.16-38,377.80-15,879.12

Finding the Fourth Proportional to 27,818.16, 38,377.80 and 15,879.12

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Solution

The fourth proportional to 27,818.16, 38,377.80 and 15,879.12 is: 21,906.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,818.16 : 38,377.80 = 15,879.12 : x
  2. Step 2: Convert to fraction form
    27,818.16/38,377.80 = 15,879.12/x
  3. Step 3: Cross multiply
    27,818.16x = 38,377.80 × 15,879.12
  4. Step 4: Simplify right side
    27,818.16x = 609,405,691.54
  5. Step 5: Solve for x
    x = 609,405,691.54/27,818.16
  6. Step 6: Final answer
    x = 21,906.76

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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.