Home / 15,743.61-21,727.71-11,757.80

Finding the Fourth Proportional to 15,743.61, 21,727.71 and 11,757.80

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Solution

The fourth proportional to 15,743.61, 21,727.71 and 11,757.80 is: 16,226.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,743.61 : 21,727.71 = 11,757.80 : x
  2. Step 2: Convert to fraction form
    15,743.61/21,727.71 = 11,757.80/x
  3. Step 3: Cross multiply
    15,743.61x = 21,727.71 × 11,757.80
  4. Step 4: Simplify right side
    15,743.61x = 255,469,960.00
  5. Step 5: Solve for x
    x = 255,469,960.00/15,743.61
  6. Step 6: Final answer
    x = 16,226.90

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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.