Home / 20,132.28-27,796.16-12,589.97

Finding the Fourth Proportional to 20,132.28, 27,796.16 and 12,589.97

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Solution

The fourth proportional to 20,132.28, 27,796.16 and 12,589.97 is: 17,382.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.28 : 27,796.16 = 12,589.97 : x
  2. Step 2: Convert to fraction form
    20,132.28/27,796.16 = 12,589.97/x
  3. Step 3: Cross multiply
    20,132.28x = 27,796.16 × 12,589.97
  4. Step 4: Simplify right side
    20,132.28x = 349,952,713.01
  5. Step 5: Solve for x
    x = 349,952,713.01/20,132.28
  6. Step 6: Final answer
    x = 17,382.67

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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.