Home / 18,102.12-27,156.38-6,422.12

Finding the Fourth Proportional to 18,102.12, 27,156.38 and 6,422.12

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Solution

The fourth proportional to 18,102.12, 27,156.38 and 6,422.12 is: 9,634.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,102.12 : 27,156.38 = 6,422.12 : x
  2. Step 2: Convert to fraction form
    18,102.12/27,156.38 = 6,422.12/x
  3. Step 3: Cross multiply
    18,102.12x = 27,156.38 × 6,422.12
  4. Step 4: Simplify right side
    18,102.12x = 174,401,531.13
  5. Step 5: Solve for x
    x = 174,401,531.13/18,102.12
  6. Step 6: Final answer
    x = 9,634.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.