Home / 20,086.74-27,719.66-12,127.40

Finding the Fourth Proportional to 20,086.74, 27,719.66 and 12,127.40

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Solution

The fourth proportional to 20,086.74, 27,719.66 and 12,127.40 is: 16,735.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,086.74 : 27,719.66 = 12,127.40 : x
  2. Step 2: Convert to fraction form
    20,086.74/27,719.66 = 12,127.40/x
  3. Step 3: Cross multiply
    20,086.74x = 27,719.66 × 12,127.40
  4. Step 4: Simplify right side
    20,086.74x = 336,167,404.68
  5. Step 5: Solve for x
    x = 336,167,404.68/20,086.74
  6. Step 6: Final answer
    x = 16,735.79

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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.