Home / 12,121.39-16,727.75-7,086.04

Finding the Fourth Proportional to 12,121.39, 16,727.75 and 7,086.04

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Solution

The fourth proportional to 12,121.39, 16,727.75 and 7,086.04 is: 9,778.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,121.39 : 16,727.75 = 7,086.04 : x
  2. Step 2: Convert to fraction form
    12,121.39/16,727.75 = 7,086.04/x
  3. Step 3: Cross multiply
    12,121.39x = 16,727.75 × 7,086.04
  4. Step 4: Simplify right side
    12,121.39x = 118,533,470.18
  5. Step 5: Solve for x
    x = 118,533,470.18/12,121.39
  6. Step 6: Final answer
    x = 9,778.87

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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.