Home / 27,878.52-38,472.65-15,131.81

Finding the Fourth Proportional to 27,878.52, 38,472.65 and 15,131.81

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Solution

The fourth proportional to 27,878.52, 38,472.65 and 15,131.81 is: 20,882.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,878.52 : 38,472.65 = 15,131.81 : x
  2. Step 2: Convert to fraction form
    27,878.52/38,472.65 = 15,131.81/x
  3. Step 3: Cross multiply
    27,878.52x = 38,472.65 × 15,131.81
  4. Step 4: Simplify right side
    27,878.52x = 582,160,830.00
  5. Step 5: Solve for x
    x = 582,160,830.00/27,878.52
  6. Step 6: Final answer
    x = 20,882.06

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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.