Home / 11,142.40-16,680.80-8,233.68

Finding the Fourth Proportional to 11,142.40, 16,680.80 and 8,233.68

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Solution

The fourth proportional to 11,142.40, 16,680.80 and 8,233.68 is: 12,326.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,142.40 : 16,680.80 = 8,233.68 : x
  2. Step 2: Convert to fraction form
    11,142.40/16,680.80 = 8,233.68/x
  3. Step 3: Cross multiply
    11,142.40x = 16,680.80 × 8,233.68
  4. Step 4: Simplify right side
    11,142.40x = 137,344,369.34
  5. Step 5: Solve for x
    x = 137,344,369.34/11,142.40
  6. Step 6: Final answer
    x = 12,326.28

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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.