Home / 20,680.36-28,532.46-11,727.16

Finding the Fourth Proportional to 20,680.36, 28,532.46 and 11,727.16

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Solution

The fourth proportional to 20,680.36, 28,532.46 and 11,727.16 is: 16,179.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,680.36 : 28,532.46 = 11,727.16 : x
  2. Step 2: Convert to fraction form
    20,680.36/28,532.46 = 11,727.16/x
  3. Step 3: Cross multiply
    20,680.36x = 28,532.46 × 11,727.16
  4. Step 4: Simplify right side
    20,680.36x = 334,604,723.61
  5. Step 5: Solve for x
    x = 334,604,723.61/20,680.36
  6. Step 6: Final answer
    x = 16,179.83

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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.