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Finding the Fourth Proportional to 12,480.11, 18,724.04 and 7,488.06

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Solution

The fourth proportional to 12,480.11, 18,724.04 and 7,488.06 is: 11,234.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,480.11 : 18,724.04 = 7,488.06 : x
  2. Step 2: Convert to fraction form
    12,480.11/18,724.04 = 7,488.06/x
  3. Step 3: Cross multiply
    12,480.11x = 18,724.04 × 7,488.06
  4. Step 4: Simplify right side
    12,480.11x = 140,206,734.96
  5. Step 5: Solve for x
    x = 140,206,734.96/12,480.11
  6. Step 6: Final answer
    x = 11,234.41

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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.