Home / 12,480.56-18,721.46-3,715.55

Finding the Fourth Proportional to 12,480.56, 18,721.46 and 3,715.55

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Solution

The fourth proportional to 12,480.56, 18,721.46 and 3,715.55 is: 5,573.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.56 : 18,721.46 = 3,715.55 : x
  2. Step 2: Convert to fraction form
    12,480.56/18,721.46 = 3,715.55/x
  3. Step 3: Cross multiply
    12,480.56x = 18,721.46 × 3,715.55
  4. Step 4: Simplify right side
    12,480.56x = 69,560,548.93
  5. Step 5: Solve for x
    x = 69,560,548.93/12,480.56
  6. Step 6: Final answer
    x = 5,573.51

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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.