Home / 18,899.90-28,351.23-6,414.86

Finding the Fourth Proportional to 18,899.90, 28,351.23 and 6,414.86

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Solution

The fourth proportional to 18,899.90, 28,351.23 and 6,414.86 is: 9,622.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,899.90 : 28,351.23 = 6,414.86 : x
  2. Step 2: Convert to fraction form
    18,899.90/28,351.23 = 6,414.86/x
  3. Step 3: Cross multiply
    18,899.90x = 28,351.23 × 6,414.86
  4. Step 4: Simplify right side
    18,899.90x = 181,869,171.28
  5. Step 5: Solve for x
    x = 181,869,171.28/18,899.90
  6. Step 6: Final answer
    x = 9,622.76

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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.