Home / 27,648-38,155.20-15,711.84

Finding the Fourth Proportional to 27,648, 38,155.20 and 15,711.84

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Solution

The fourth proportional to 27,648, 38,155.20 and 15,711.84 is: 21,682.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,648 : 38,155.20 = 15,711.84 : x
  2. Step 2: Convert to fraction form
    27,648/38,155.20 = 15,711.84/x
  3. Step 3: Cross multiply
    27,648x = 38,155.20 × 15,711.84
  4. Step 4: Simplify right side
    27,648x = 599,488,397.57
  5. Step 5: Solve for x
    x = 599,488,397.57/27,648
  6. Step 6: Final answer
    x = 21,682.88

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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.