Home / 21,608.25-29,819.39-12,177.15

Finding the Fourth Proportional to 21,608.25, 29,819.39 and 12,177.15

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Solution

The fourth proportional to 21,608.25, 29,819.39 and 12,177.15 is: 16,804.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,608.25 : 29,819.39 = 12,177.15 : x
  2. Step 2: Convert to fraction form
    21,608.25/29,819.39 = 12,177.15/x
  3. Step 3: Cross multiply
    21,608.25x = 29,819.39 × 12,177.15
  4. Step 4: Simplify right side
    21,608.25x = 363,115,124.05
  5. Step 5: Solve for x
    x = 363,115,124.05/21,608.25
  6. Step 6: Final answer
    x = 16,804.47

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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.