Home / 27,878.15-38,472.13-15,131.44

Finding the Fourth Proportional to 27,878.15, 38,472.13 and 15,131.44

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Solution

The fourth proportional to 27,878.15, 38,472.13 and 15,131.44 is: 20,881.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,878.15 : 38,472.13 = 15,131.44 : x
  2. Step 2: Convert to fraction form
    27,878.15/38,472.13 = 15,131.44/x
  3. Step 3: Cross multiply
    27,878.15x = 38,472.13 × 15,131.44
  4. Step 4: Simplify right side
    27,878.15x = 582,138,726.77
  5. Step 5: Solve for x
    x = 582,138,726.77/27,878.15
  6. Step 6: Final answer
    x = 20,881.54

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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.