Home / 28,638.44-39,521.25-15,891.66

Finding the Fourth Proportional to 28,638.44, 39,521.25 and 15,891.66

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Solution

The fourth proportional to 28,638.44, 39,521.25 and 15,891.66 is: 21,930.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,638.44 : 39,521.25 = 15,891.66 : x
  2. Step 2: Convert to fraction form
    28,638.44/39,521.25 = 15,891.66/x
  3. Step 3: Cross multiply
    28,638.44x = 39,521.25 × 15,891.66
  4. Step 4: Simplify right side
    28,638.44x = 628,058,267.78
  5. Step 5: Solve for x
    x = 628,058,267.78/28,638.44
  6. Step 6: Final answer
    x = 21,930.61

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1.5x scale

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.