Home / 12,321.57-18,480.33-3,554.13

Finding the Fourth Proportional to 12,321.57, 18,480.33 and 3,554.13

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Solution

The fourth proportional to 12,321.57, 18,480.33 and 3,554.13 is: 5,330.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,321.57 : 18,480.33 = 3,554.13 : x
  2. Step 2: Convert to fraction form
    12,321.57/18,480.33 = 3,554.13/x
  3. Step 3: Cross multiply
    12,321.57x = 18,480.33 × 3,554.13
  4. Step 4: Simplify right side
    12,321.57x = 65,681,495.26
  5. Step 5: Solve for x
    x = 65,681,495.26/12,321.57
  6. Step 6: Final answer
    x = 5,330.61

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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.