Home / 27,965.28-38,591.28-15,389.76

Finding the Fourth Proportional to 27,965.28, 38,591.28 and 15,389.76

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Solution

The fourth proportional to 27,965.28, 38,591.28 and 15,389.76 is: 21,237.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,965.28 : 38,591.28 = 15,389.76 : x
  2. Step 2: Convert to fraction form
    27,965.28/38,591.28 = 15,389.76/x
  3. Step 3: Cross multiply
    27,965.28x = 38,591.28 × 15,389.76
  4. Step 4: Simplify right side
    27,965.28x = 593,910,537.29
  5. Step 5: Solve for x
    x = 593,910,537.29/27,965.28
  6. Step 6: Final answer
    x = 21,237.43

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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.