Home / 12,240.82-18,364.80-3,920.65

Finding the Fourth Proportional to 12,240.82, 18,364.80 and 3,920.65

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Solution

The fourth proportional to 12,240.82, 18,364.80 and 3,920.65 is: 5,882.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,240.82 : 18,364.80 = 3,920.65 : x
  2. Step 2: Convert to fraction form
    12,240.82/18,364.80 = 3,920.65/x
  3. Step 3: Cross multiply
    12,240.82x = 18,364.80 × 3,920.65
  4. Step 4: Simplify right side
    12,240.82x = 72,002,014.19
  5. Step 5: Solve for x
    x = 72,002,014.19/12,240.82
  6. Step 6: Final answer
    x = 5,882.12

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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.