Home / 20,089.30-27,724.41-12,132.71

Finding the Fourth Proportional to 20,089.30, 27,724.41 and 12,132.71

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Solution

The fourth proportional to 20,089.30, 27,724.41 and 12,132.71 is: 16,743.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,089.30 : 27,724.41 = 12,132.71 : x
  2. Step 2: Convert to fraction form
    20,089.30/27,724.41 = 12,132.71/x
  3. Step 3: Cross multiply
    20,089.30x = 27,724.41 × 12,132.71
  4. Step 4: Simplify right side
    20,089.30x = 336,372,226.45
  5. Step 5: Solve for x
    x = 336,372,226.45/20,089.30
  6. Step 6: Final answer
    x = 16,743.85

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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.