Home / 18,722.97-28,061.82-8,188.47

Finding the Fourth Proportional to 18,722.97, 28,061.82 and 8,188.47

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Solution

The fourth proportional to 18,722.97, 28,061.82 and 8,188.47 is: 12,272.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,722.97 : 28,061.82 = 8,188.47 : x
  2. Step 2: Convert to fraction form
    18,722.97/28,061.82 = 8,188.47/x
  3. Step 3: Cross multiply
    18,722.97x = 28,061.82 × 8,188.47
  4. Step 4: Simplify right side
    18,722.97x = 229,783,371.22
  5. Step 5: Solve for x
    x = 229,783,371.22/18,722.97
  6. Step 6: Final answer
    x = 12,272.81

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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.