Home / 18,872.41-28,308.89-7,186.27

Finding the Fourth Proportional to 18,872.41, 28,308.89 and 7,186.27

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Solution

The fourth proportional to 18,872.41, 28,308.89 and 7,186.27 is: 10,779.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,872.41 : 28,308.89 = 7,186.27 : x
  2. Step 2: Convert to fraction form
    18,872.41/28,308.89 = 7,186.27/x
  3. Step 3: Cross multiply
    18,872.41x = 28,308.89 × 7,186.27
  4. Step 4: Simplify right side
    18,872.41x = 203,435,326.94
  5. Step 5: Solve for x
    x = 203,435,326.94/18,872.41
  6. Step 6: Final answer
    x = 10,779.51

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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.