Home / 20,087.18-27,720.45-11,591.06

Finding the Fourth Proportional to 20,087.18, 27,720.45 and 11,591.06

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Solution

The fourth proportional to 20,087.18, 27,720.45 and 11,591.06 is: 15,995.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.18 : 27,720.45 = 11,591.06 : x
  2. Step 2: Convert to fraction form
    20,087.18/27,720.45 = 11,591.06/x
  3. Step 3: Cross multiply
    20,087.18x = 27,720.45 × 11,591.06
  4. Step 4: Simplify right side
    20,087.18x = 321,309,399.18
  5. Step 5: Solve for x
    x = 321,309,399.18/20,087.18
  6. Step 6: Final answer
    x = 15,995.74

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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.