Home / 18,767.40-28,191.54-11,375.88

Finding the Fourth Proportional to 18,767.40, 28,191.54 and 11,375.88

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Solution

The fourth proportional to 18,767.40, 28,191.54 and 11,375.88 is: 17,088.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,767.40 : 28,191.54 = 11,375.88 : x
  2. Step 2: Convert to fraction form
    18,767.40/28,191.54 = 11,375.88/x
  3. Step 3: Cross multiply
    18,767.40x = 28,191.54 × 11,375.88
  4. Step 4: Simplify right side
    18,767.40x = 320,703,576.06
  5. Step 5: Solve for x
    x = 320,703,576.06/18,767.40
  6. Step 6: Final answer
    x = 17,088.33

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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.