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Finding the Fourth Proportional to 12,377.65, 17,080.92 and 6,999.99

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Solution

The fourth proportional to 12,377.65, 17,080.92 and 6,999.99 is: 9,659.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,377.65 : 17,080.92 = 6,999.99 : x
  2. Step 2: Convert to fraction form
    12,377.65/17,080.92 = 6,999.99/x
  3. Step 3: Cross multiply
    12,377.65x = 17,080.92 × 6,999.99
  4. Step 4: Simplify right side
    12,377.65x = 119,566,269.19
  5. Step 5: Solve for x
    x = 119,566,269.19/12,377.65
  6. Step 6: Final answer
    x = 9,659.85

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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.