Home / 21,042.98-29,049.83-13,087.77

Finding the Fourth Proportional to 21,042.98, 29,049.83 and 13,087.77

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Solution

The fourth proportional to 21,042.98, 29,049.83 and 13,087.77 is: 18,067.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,042.98 : 29,049.83 = 13,087.77 : x
  2. Step 2: Convert to fraction form
    21,042.98/29,049.83 = 13,087.77/x
  3. Step 3: Cross multiply
    21,042.98x = 29,049.83 × 13,087.77
  4. Step 4: Simplify right side
    21,042.98x = 380,197,493.58
  5. Step 5: Solve for x
    x = 380,197,493.58/21,042.98
  6. Step 6: Final answer
    x = 18,067.66

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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.