Home / 18,132.10-27,198.82-4,985.50

Finding the Fourth Proportional to 18,132.10, 27,198.82 and 4,985.50

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Solution

The fourth proportional to 18,132.10, 27,198.82 and 4,985.50 is: 7,478.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,132.10 : 27,198.82 = 4,985.50 : x
  2. Step 2: Convert to fraction form
    18,132.10/27,198.82 = 4,985.50/x
  3. Step 3: Cross multiply
    18,132.10x = 27,198.82 × 4,985.50
  4. Step 4: Simplify right side
    18,132.10x = 135,599,717.11
  5. Step 5: Solve for x
    x = 135,599,717.11/18,132.10
  6. Step 6: Final answer
    x = 7,478.43

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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.