Home / 13,278.29-18,324.20-7,310.36

Finding the Fourth Proportional to 13,278.29, 18,324.20 and 7,310.36

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Solution

The fourth proportional to 13,278.29, 18,324.20 and 7,310.36 is: 10,088.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.29 : 18,324.20 = 7,310.36 : x
  2. Step 2: Convert to fraction form
    13,278.29/18,324.20 = 7,310.36/x
  3. Step 3: Cross multiply
    13,278.29x = 18,324.20 × 7,310.36
  4. Step 4: Simplify right side
    13,278.29x = 133,956,507.97
  5. Step 5: Solve for x
    x = 133,956,507.97/13,278.29
  6. Step 6: Final answer
    x = 10,088.39

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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.