Home / 20,087.82-27,720.63-12,127.14

Finding the Fourth Proportional to 20,087.82, 27,720.63 and 12,127.14

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Solution

The fourth proportional to 20,087.82, 27,720.63 and 12,127.14 is: 16,735.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.82 : 27,720.63 = 12,127.14 : x
  2. Step 2: Convert to fraction form
    20,087.82/27,720.63 = 12,127.14/x
  3. Step 3: Cross multiply
    20,087.82x = 27,720.63 × 12,127.14
  4. Step 4: Simplify right side
    20,087.82x = 336,171,960.90
  5. Step 5: Solve for x
    x = 336,171,960.90/20,087.82
  6. Step 6: Final answer
    x = 16,735.11

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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.