Home / 18,340.34-27,456.32-13,680.78

Finding the Fourth Proportional to 18,340.34, 27,456.32 and 13,680.78

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Solution

The fourth proportional to 18,340.34, 27,456.32 and 13,680.78 is: 20,480.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,340.34 : 27,456.32 = 13,680.78 : x
  2. Step 2: Convert to fraction form
    18,340.34/27,456.32 = 13,680.78/x
  3. Step 3: Cross multiply
    18,340.34x = 27,456.32 × 13,680.78
  4. Step 4: Simplify right side
    18,340.34x = 375,623,873.53
  5. Step 5: Solve for x
    x = 375,623,873.53/18,340.34
  6. Step 6: Final answer
    x = 20,480.75

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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.