Home / 27,687.41-38,201.28-15,748.82

Finding the Fourth Proportional to 27,687.41, 38,201.28 and 15,748.82

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Solution

The fourth proportional to 27,687.41, 38,201.28 and 15,748.82 is: 21,729.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,687.41 : 38,201.28 = 15,748.82 : x
  2. Step 2: Convert to fraction form
    27,687.41/38,201.28 = 15,748.82/x
  3. Step 3: Cross multiply
    27,687.41x = 38,201.28 × 15,748.82
  4. Step 4: Simplify right side
    27,687.41x = 601,625,082.49
  5. Step 5: Solve for x
    x = 601,625,082.49/27,687.41
  6. Step 6: Final answer
    x = 21,729.19

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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.