Home / 12,215.25-18,312.02-4,422.33

Finding the Fourth Proportional to 12,215.25, 18,312.02 and 4,422.33

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Solution

The fourth proportional to 12,215.25, 18,312.02 and 4,422.33 is: 6,629.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,215.25 : 18,312.02 = 4,422.33 : x
  2. Step 2: Convert to fraction form
    12,215.25/18,312.02 = 4,422.33/x
  3. Step 3: Cross multiply
    12,215.25x = 18,312.02 × 4,422.33
  4. Step 4: Simplify right side
    12,215.25x = 80,981,773.29
  5. Step 5: Solve for x
    x = 80,981,773.29/12,215.25
  6. Step 6: Final answer
    x = 6,629.56

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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.