Home / 28,375.57-39,162.96-21,648.48

Finding the Fourth Proportional to 28,375.57, 39,162.96 and 21,648.48

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Solution

The fourth proportional to 28,375.57, 39,162.96 and 21,648.48 is: 29,878.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,375.57 : 39,162.96 = 21,648.48 : x
  2. Step 2: Convert to fraction form
    28,375.57/39,162.96 = 21,648.48/x
  3. Step 3: Cross multiply
    28,375.57x = 39,162.96 × 21,648.48
  4. Step 4: Simplify right side
    28,375.57x = 847,818,629.73
  5. Step 5: Solve for x
    x = 847,818,629.73/28,375.57
  6. Step 6: Final answer
    x = 29,878.48

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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.