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Finding the Fourth Proportional to 12,125.80, 18,179.10 and 6,653.80

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Solution

The fourth proportional to 12,125.80, 18,179.10 and 6,653.80 is: 9,975.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,125.80 : 18,179.10 = 6,653.80 : x
  2. Step 2: Convert to fraction form
    12,125.80/18,179.10 = 6,653.80/x
  3. Step 3: Cross multiply
    12,125.80x = 18,179.10 × 6,653.80
  4. Step 4: Simplify right side
    12,125.80x = 120,960,095.58
  5. Step 5: Solve for x
    x = 120,960,095.58/12,125.80
  6. Step 6: Final answer
    x = 9,975.43

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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.