Home / 28,512.24-39,345.72-15,764.61

Finding the Fourth Proportional to 28,512.24, 39,345.72 and 15,764.61

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Solution

The fourth proportional to 28,512.24, 39,345.72 and 15,764.61 is: 21,754.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,512.24 : 39,345.72 = 15,764.61 : x
  2. Step 2: Convert to fraction form
    28,512.24/39,345.72 = 15,764.61/x
  3. Step 3: Cross multiply
    28,512.24x = 39,345.72 × 15,764.61
  4. Step 4: Simplify right side
    28,512.24x = 620,269,930.97
  5. Step 5: Solve for x
    x = 620,269,930.97/28,512.24
  6. Step 6: Final answer
    x = 21,754.51

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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.