Home / 28,578.86-42,847.52-11,943.65

Finding the Fourth Proportional to 28,578.86, 42,847.52 and 11,943.65

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Solution

The fourth proportional to 28,578.86, 42,847.52 and 11,943.65 is: 17,906.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,578.86 : 42,847.52 = 11,943.65 : x
  2. Step 2: Convert to fraction form
    28,578.86/42,847.52 = 11,943.65/x
  3. Step 3: Cross multiply
    28,578.86x = 42,847.52 × 11,943.65
  4. Step 4: Simplify right side
    28,578.86x = 511,755,508.29
  5. Step 5: Solve for x
    x = 511,755,508.29/28,578.86
  6. Step 6: Final answer
    x = 17,906.79

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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.