Home / 27,815.22-38,388.60-15,882.84

Finding the Fourth Proportional to 27,815.22, 38,388.60 and 15,882.84

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Solution

The fourth proportional to 27,815.22, 38,388.60 and 15,882.84 is: 21,920.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,815.22 : 38,388.60 = 15,882.84 : x
  2. Step 2: Convert to fraction form
    27,815.22/38,388.60 = 15,882.84/x
  3. Step 3: Cross multiply
    27,815.22x = 38,388.60 × 15,882.84
  4. Step 4: Simplify right side
    27,815.22x = 609,719,991.62
  5. Step 5: Solve for x
    x = 609,719,991.62/27,815.22
  6. Step 6: Final answer
    x = 21,920.37

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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.