Home / 21,149.05-29,187.19-12,074.82

Finding the Fourth Proportional to 21,149.05, 29,187.19 and 12,074.82

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Solution

The fourth proportional to 21,149.05, 29,187.19 and 12,074.82 is: 16,664.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,149.05 : 29,187.19 = 12,074.82 : x
  2. Step 2: Convert to fraction form
    21,149.05/29,187.19 = 12,074.82/x
  3. Step 3: Cross multiply
    21,149.05x = 29,187.19 × 12,074.82
  4. Step 4: Simplify right side
    21,149.05x = 352,430,067.45
  5. Step 5: Solve for x
    x = 352,430,067.45/21,149.05
  6. Step 6: Final answer
    x = 16,664.11

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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.