Home / 20,087.65-27,720.48-11,589.79

Finding the Fourth Proportional to 20,087.65, 27,720.48 and 11,589.79

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Solution

The fourth proportional to 20,087.65, 27,720.48 and 11,589.79 is: 15,993.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.65 : 27,720.48 = 11,589.79 : x
  2. Step 2: Convert to fraction form
    20,087.65/27,720.48 = 11,589.79/x
  3. Step 3: Cross multiply
    20,087.65x = 27,720.48 × 11,589.79
  4. Step 4: Simplify right side
    20,087.65x = 321,274,541.90
  5. Step 5: Solve for x
    x = 321,274,541.90/20,087.65
  6. Step 6: Final answer
    x = 15,993.63

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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.