Home / 12,306.30-16,976.79-8,943.90

Finding the Fourth Proportional to 12,306.30, 16,976.79 and 8,943.90

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Solution

The fourth proportional to 12,306.30, 16,976.79 and 8,943.90 is: 12,338.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,306.30 : 16,976.79 = 8,943.90 : x
  2. Step 2: Convert to fraction form
    12,306.30/16,976.79 = 8,943.90/x
  3. Step 3: Cross multiply
    12,306.30x = 16,976.79 × 8,943.90
  4. Step 4: Simplify right side
    12,306.30x = 151,838,712.08
  5. Step 5: Solve for x
    x = 151,838,712.08/12,306.30
  6. Step 6: Final answer
    x = 12,338.29

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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.