Home / 13,278.68-18,324.90-7,310.54

Finding the Fourth Proportional to 13,278.68, 18,324.90 and 7,310.54

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Solution

The fourth proportional to 13,278.68, 18,324.90 and 7,310.54 is: 10,088.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.68 : 18,324.90 = 7,310.54 : x
  2. Step 2: Convert to fraction form
    13,278.68/18,324.90 = 7,310.54/x
  3. Step 3: Cross multiply
    13,278.68x = 18,324.90 × 7,310.54
  4. Step 4: Simplify right side
    13,278.68x = 133,964,914.45
  5. Step 5: Solve for x
    x = 133,964,914.45/13,278.68
  6. Step 6: Final answer
    x = 10,088.72

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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.