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Finding the Fourth Proportional to 12,169.65, 16,799.75 and 7,133.20

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Solution

The fourth proportional to 12,169.65, 16,799.75 and 7,133.20 is: 9,847.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,169.65 : 16,799.75 = 7,133.20 : x
  2. Step 2: Convert to fraction form
    12,169.65/16,799.75 = 7,133.20/x
  3. Step 3: Cross multiply
    12,169.65x = 16,799.75 × 7,133.20
  4. Step 4: Simplify right side
    12,169.65x = 119,835,976.70
  5. Step 5: Solve for x
    x = 119,835,976.70/12,169.65
  6. Step 6: Final answer
    x = 9,847.12

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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.