Home / 27,890.11-38,488.68-15,143.44

Finding the Fourth Proportional to 27,890.11, 38,488.68 and 15,143.44

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Solution

The fourth proportional to 27,890.11, 38,488.68 and 15,143.44 is: 20,898.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,890.11 : 38,488.68 = 15,143.44 : x
  2. Step 2: Convert to fraction form
    27,890.11/38,488.68 = 15,143.44/x
  3. Step 3: Cross multiply
    27,890.11x = 38,488.68 × 15,143.44
  4. Step 4: Simplify right side
    27,890.11x = 582,851,016.26
  5. Step 5: Solve for x
    x = 582,851,016.26/27,890.11
  6. Step 6: Final answer
    x = 20,898.13

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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.