Home / 18,868.06-28,302.34-8,191.96

Finding the Fourth Proportional to 18,868.06, 28,302.34 and 8,191.96

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Solution

The fourth proportional to 18,868.06, 28,302.34 and 8,191.96 is: 12,288.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,868.06 : 28,302.34 = 8,191.96 : x
  2. Step 2: Convert to fraction form
    18,868.06/28,302.34 = 8,191.96/x
  3. Step 3: Cross multiply
    18,868.06x = 28,302.34 × 8,191.96
  4. Step 4: Simplify right side
    18,868.06x = 231,851,617.87
  5. Step 5: Solve for x
    x = 231,851,617.87/18,868.06
  6. Step 6: Final answer
    x = 12,288.04

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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.