Home / 18,115.12-27,172.68-4,969.42

Finding the Fourth Proportional to 18,115.12, 27,172.68 and 4,969.42

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Solution

The fourth proportional to 18,115.12, 27,172.68 and 4,969.42 is: 7,454.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,115.12 : 27,172.68 = 4,969.42 : x
  2. Step 2: Convert to fraction form
    18,115.12/27,172.68 = 4,969.42/x
  3. Step 3: Cross multiply
    18,115.12x = 27,172.68 × 4,969.42
  4. Step 4: Simplify right side
    18,115.12x = 135,032,459.45
  5. Step 5: Solve for x
    x = 135,032,459.45/18,115.12
  6. Step 6: Final answer
    x = 7,454.13

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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.