Home / 12,280-16,946.52-6,691.12

Finding the Fourth Proportional to 12,280, 16,946.52 and 6,691.12

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Solution

The fourth proportional to 12,280, 16,946.52 and 6,691.12 is: 9,233.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280 : 16,946.52 = 6,691.12 : x
  2. Step 2: Convert to fraction form
    12,280/16,946.52 = 6,691.12/x
  3. Step 3: Cross multiply
    12,280x = 16,946.52 × 6,691.12
  4. Step 4: Simplify right side
    12,280x = 113,391,198.90
  5. Step 5: Solve for x
    x = 113,391,198.90/12,280
  6. Step 6: Final answer
    x = 9,233.81

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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.