Home / 27,857.76-38,442.24-15,919.52

Finding the Fourth Proportional to 27,857.76, 38,442.24 and 15,919.52

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Solution

The fourth proportional to 27,857.76, 38,442.24 and 15,919.52 is: 21,968.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,857.76 : 38,442.24 = 15,919.52 : x
  2. Step 2: Convert to fraction form
    27,857.76/38,442.24 = 15,919.52/x
  3. Step 3: Cross multiply
    27,857.76x = 38,442.24 × 15,919.52
  4. Step 4: Simplify right side
    27,857.76x = 611,982,008.52
  5. Step 5: Solve for x
    x = 611,982,008.52/27,857.76
  6. Step 6: Final answer
    x = 21,968.10

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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.