Home / 27,819.06-38,390.79-15,243.06

Finding the Fourth Proportional to 27,819.06, 38,390.79 and 15,243.06

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Solution

The fourth proportional to 27,819.06, 38,390.79 and 15,243.06 is: 21,035.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,819.06 : 38,390.79 = 15,243.06 : x
  2. Step 2: Convert to fraction form
    27,819.06/38,390.79 = 15,243.06/x
  3. Step 3: Cross multiply
    27,819.06x = 38,390.79 × 15,243.06
  4. Step 4: Simplify right side
    27,819.06x = 585,193,115.42
  5. Step 5: Solve for x
    x = 585,193,115.42/27,819.06
  6. Step 6: Final answer
    x = 21,035.69

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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.