Home / 12,146.68-18,220.04-3,381.60

Finding the Fourth Proportional to 12,146.68, 18,220.04 and 3,381.60

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Solution

The fourth proportional to 12,146.68, 18,220.04 and 3,381.60 is: 5,072.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,146.68 : 18,220.04 = 3,381.60 : x
  2. Step 2: Convert to fraction form
    12,146.68/18,220.04 = 3,381.60/x
  3. Step 3: Cross multiply
    12,146.68x = 18,220.04 × 3,381.60
  4. Step 4: Simplify right side
    12,146.68x = 61,612,887.26
  5. Step 5: Solve for x
    x = 61,612,887.26/12,146.68
  6. Step 6: Final answer
    x = 5,072.41

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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.