Home / 27,885.43-38,481.99-15,138.63

Finding the Fourth Proportional to 27,885.43, 38,481.99 and 15,138.63

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Solution

The fourth proportional to 27,885.43, 38,481.99 and 15,138.63 is: 20,891.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,885.43 : 38,481.99 = 15,138.63 : x
  2. Step 2: Convert to fraction form
    27,885.43/38,481.99 = 15,138.63/x
  3. Step 3: Cross multiply
    27,885.43x = 38,481.99 × 15,138.63
  4. Step 4: Simplify right side
    27,885.43x = 582,564,809.65
  5. Step 5: Solve for x
    x = 582,564,809.65/27,885.43
  6. Step 6: Final answer
    x = 20,891.37

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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.