Home / 18,207.72-27,318.11-7,122.36

Finding the Fourth Proportional to 18,207.72, 27,318.11 and 7,122.36

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Solution

The fourth proportional to 18,207.72, 27,318.11 and 7,122.36 is: 10,686.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,207.72 : 27,318.11 = 7,122.36 : x
  2. Step 2: Convert to fraction form
    18,207.72/27,318.11 = 7,122.36/x
  3. Step 3: Cross multiply
    18,207.72x = 27,318.11 × 7,122.36
  4. Step 4: Simplify right side
    18,207.72x = 194,569,413.94
  5. Step 5: Solve for x
    x = 194,569,413.94/18,207.72
  6. Step 6: Final answer
    x = 10,686.09

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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.