Home / 18,876.30-28,317.12-6,399.88

Finding the Fourth Proportional to 18,876.30, 28,317.12 and 6,399.88

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Solution

The fourth proportional to 18,876.30, 28,317.12 and 6,399.88 is: 9,600.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,876.30 : 28,317.12 = 6,399.88 : x
  2. Step 2: Convert to fraction form
    18,876.30/28,317.12 = 6,399.88/x
  3. Step 3: Cross multiply
    18,876.30x = 28,317.12 × 6,399.88
  4. Step 4: Simplify right side
    18,876.30x = 181,226,169.95
  5. Step 5: Solve for x
    x = 181,226,169.95/18,876.30
  6. Step 6: Final answer
    x = 9,600.73

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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.