Home / 27,882.57-38,478.05-15,135.78

Finding the Fourth Proportional to 27,882.57, 38,478.05 and 15,135.78

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Solution

The fourth proportional to 27,882.57, 38,478.05 and 15,135.78 is: 20,887.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,882.57 : 38,478.05 = 15,135.78 : x
  2. Step 2: Convert to fraction form
    27,882.57/38,478.05 = 15,135.78/x
  3. Step 3: Cross multiply
    27,882.57x = 38,478.05 × 15,135.78
  4. Step 4: Simplify right side
    27,882.57x = 582,395,136.42
  5. Step 5: Solve for x
    x = 582,395,136.42/27,882.57
  6. Step 6: Final answer
    x = 20,887.43

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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.