Home / 27,877.28-38,470.59-15,301.76

Finding the Fourth Proportional to 27,877.28, 38,470.59 and 15,301.76

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Solution

The fourth proportional to 27,877.28, 38,470.59 and 15,301.76 is: 21,116.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,877.28 : 38,470.59 = 15,301.76 : x
  2. Step 2: Convert to fraction form
    27,877.28/38,470.59 = 15,301.76/x
  3. Step 3: Cross multiply
    27,877.28x = 38,470.59 × 15,301.76
  4. Step 4: Simplify right side
    27,877.28x = 588,667,735.24
  5. Step 5: Solve for x
    x = 588,667,735.24/27,877.28
  6. Step 6: Final answer
    x = 21,116.40

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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.