Home / 12,187.26-18,280.82-3,422.12

Finding the Fourth Proportional to 12,187.26, 18,280.82 and 3,422.12

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Solution

The fourth proportional to 12,187.26, 18,280.82 and 3,422.12 is: 5,133.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,187.26 : 18,280.82 = 3,422.12 : x
  2. Step 2: Convert to fraction form
    12,187.26/18,280.82 = 3,422.12/x
  3. Step 3: Cross multiply
    12,187.26x = 18,280.82 × 3,422.12
  4. Step 4: Simplify right side
    12,187.26x = 62,559,076.89
  5. Step 5: Solve for x
    x = 62,559,076.89/12,187.26
  6. Step 6: Final answer
    x = 5,133.15

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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.