Home / 20,087.18-27,720.32-11,134.79

Finding the Fourth Proportional to 20,087.18, 27,720.32 and 11,134.79

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Solution

The fourth proportional to 20,087.18, 27,720.32 and 11,134.79 is: 15,366.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.18 : 27,720.32 = 11,134.79 : x
  2. Step 2: Convert to fraction form
    20,087.18/27,720.32 = 11,134.79/x
  3. Step 3: Cross multiply
    20,087.18x = 27,720.32 × 11,134.79
  4. Step 4: Simplify right side
    20,087.18x = 308,659,941.93
  5. Step 5: Solve for x
    x = 308,659,941.93/20,087.18
  6. Step 6: Final answer
    x = 15,366.02

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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.