Home / 12,503.82-18,760.91-5,480.20

Finding the Fourth Proportional to 12,503.82, 18,760.91 and 5,480.20

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Solution

The fourth proportional to 12,503.82, 18,760.91 and 5,480.20 is: 8,222.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,503.82 : 18,760.91 = 5,480.20 : x
  2. Step 2: Convert to fraction form
    12,503.82/18,760.91 = 5,480.20/x
  3. Step 3: Cross multiply
    12,503.82x = 18,760.91 × 5,480.20
  4. Step 4: Simplify right side
    12,503.82x = 102,813,538.98
  5. Step 5: Solve for x
    x = 102,813,538.98/12,503.82
  6. Step 6: Final answer
    x = 8,222.57

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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.