Home / 28,537.12-39,377.85-15,788.61

Finding the Fourth Proportional to 28,537.12, 39,377.85 and 15,788.61

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Solution

The fourth proportional to 28,537.12, 39,377.85 and 15,788.61 is: 21,786.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,537.12 : 39,377.85 = 15,788.61 : x
  2. Step 2: Convert to fraction form
    28,537.12/39,377.85 = 15,788.61/x
  3. Step 3: Cross multiply
    28,537.12x = 39,377.85 × 15,788.61
  4. Step 4: Simplify right side
    28,537.12x = 621,721,604.75
  5. Step 5: Solve for x
    x = 621,721,604.75/28,537.12
  6. Step 6: Final answer
    x = 21,786.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.