Home / 27,886.17-38,481.57-15,139.08

Finding the Fourth Proportional to 27,886.17, 38,481.57 and 15,139.08

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Solution

The fourth proportional to 27,886.17, 38,481.57 and 15,139.08 is: 20,891.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,886.17 : 38,481.57 = 15,139.08 : x
  2. Step 2: Convert to fraction form
    27,886.17/38,481.57 = 15,139.08/x
  3. Step 3: Cross multiply
    27,886.17x = 38,481.57 × 15,139.08
  4. Step 4: Simplify right side
    27,886.17x = 582,575,566.76
  5. Step 5: Solve for x
    x = 582,575,566.76/27,886.17
  6. Step 6: Final answer
    x = 20,891.20

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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.