Home / 18,105.66-27,134.42-9,787.76

Finding the Fourth Proportional to 18,105.66, 27,134.42 and 9,787.76

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Solution

The fourth proportional to 18,105.66, 27,134.42 and 9,787.76 is: 14,668.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,105.66 : 27,134.42 = 9,787.76 : x
  2. Step 2: Convert to fraction form
    18,105.66/27,134.42 = 9,787.76/x
  3. Step 3: Cross multiply
    18,105.66x = 27,134.42 × 9,787.76
  4. Step 4: Simplify right side
    18,105.66x = 265,585,190.70
  5. Step 5: Solve for x
    x = 265,585,190.70/18,105.66
  6. Step 6: Final answer
    x = 14,668.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.