Home / 27,819.11-38,390.40-15,243.86

Finding the Fourth Proportional to 27,819.11, 38,390.40 and 15,243.86

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Solution

The fourth proportional to 27,819.11, 38,390.40 and 15,243.86 is: 21,036.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,819.11 : 38,390.40 = 15,243.86 : x
  2. Step 2: Convert to fraction form
    27,819.11/38,390.40 = 15,243.86/x
  3. Step 3: Cross multiply
    27,819.11x = 38,390.40 × 15,243.86
  4. Step 4: Simplify right side
    27,819.11x = 585,217,882.94
  5. Step 5: Solve for x
    x = 585,217,882.94/27,819.11
  6. Step 6: Final answer
    x = 21,036.54

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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.