Home / 18,121.32-27,191.25-8,259.33

Finding the Fourth Proportional to 18,121.32, 27,191.25 and 8,259.33

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Solution

The fourth proportional to 18,121.32, 27,191.25 and 8,259.33 is: 12,393.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,121.32 : 27,191.25 = 8,259.33 : x
  2. Step 2: Convert to fraction form
    18,121.32/27,191.25 = 8,259.33/x
  3. Step 3: Cross multiply
    18,121.32x = 27,191.25 × 8,259.33
  4. Step 4: Simplify right side
    18,121.32x = 224,581,506.86
  5. Step 5: Solve for x
    x = 224,581,506.86/18,121.32
  6. Step 6: Final answer
    x = 12,393.22

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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.