Home / 18,808.24-28,195.80-7,112.92

Finding the Fourth Proportional to 18,808.24, 28,195.80 and 7,112.92

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Solution

The fourth proportional to 18,808.24, 28,195.80 and 7,112.92 is: 10,663.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,808.24 : 28,195.80 = 7,112.92 : x
  2. Step 2: Convert to fraction form
    18,808.24/28,195.80 = 7,112.92/x
  3. Step 3: Cross multiply
    18,808.24x = 28,195.80 × 7,112.92
  4. Step 4: Simplify right side
    18,808.24x = 200,554,469.74
  5. Step 5: Solve for x
    x = 200,554,469.74/18,808.24
  6. Step 6: Final answer
    x = 10,663.12

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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.