Home / 13,278.65-18,324.39-7,310.18

Finding the Fourth Proportional to 13,278.65, 18,324.39 and 7,310.18

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Solution

The fourth proportional to 13,278.65, 18,324.39 and 7,310.18 is: 10,087.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.65 : 18,324.39 = 7,310.18 : x
  2. Step 2: Convert to fraction form
    13,278.65/18,324.39 = 7,310.18/x
  3. Step 3: Cross multiply
    13,278.65x = 18,324.39 × 7,310.18
  4. Step 4: Simplify right side
    13,278.65x = 133,954,497.67
  5. Step 5: Solve for x
    x = 133,954,497.67/13,278.65
  6. Step 6: Final answer
    x = 10,087.96

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Similar ratio
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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.