Home / 13,040.38-19,560.51-3,680.38

Finding the Fourth Proportional to 13,040.38, 19,560.51 and 3,680.38

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Solution

The fourth proportional to 13,040.38, 19,560.51 and 3,680.38 is: 5,520.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,040.38 : 19,560.51 = 3,680.38 : x
  2. Step 2: Convert to fraction form
    13,040.38/19,560.51 = 3,680.38/x
  3. Step 3: Cross multiply
    13,040.38x = 19,560.51 × 3,680.38
  4. Step 4: Simplify right side
    13,040.38x = 71,990,109.79
  5. Step 5: Solve for x
    x = 71,990,109.79/13,040.38
  6. Step 6: Final answer
    x = 5,520.55

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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.