Home / 12,228.15-16,850.66-8,681.43

Finding the Fourth Proportional to 12,228.15, 16,850.66 and 8,681.43

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Solution

The fourth proportional to 12,228.15, 16,850.66 and 8,681.43 is: 11,963.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,228.15 : 16,850.66 = 8,681.43 : x
  2. Step 2: Convert to fraction form
    12,228.15/16,850.66 = 8,681.43/x
  3. Step 3: Cross multiply
    12,228.15x = 16,850.66 × 8,681.43
  4. Step 4: Simplify right side
    12,228.15x = 146,287,781.84
  5. Step 5: Solve for x
    x = 146,287,781.84/12,228.15
  6. Step 6: Final answer
    x = 11,963.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.