Home / 21,616.98-29,833.39-13,121.27

Finding the Fourth Proportional to 21,616.98, 29,833.39 and 13,121.27

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Solution

The fourth proportional to 21,616.98, 29,833.39 and 13,121.27 is: 18,108.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,616.98 : 29,833.39 = 13,121.27 : x
  2. Step 2: Convert to fraction form
    21,616.98/29,833.39 = 13,121.27/x
  3. Step 3: Cross multiply
    21,616.98x = 29,833.39 × 13,121.27
  4. Step 4: Simplify right side
    21,616.98x = 391,451,823.51
  5. Step 5: Solve for x
    x = 391,451,823.51/21,616.98
  6. Step 6: Final answer
    x = 18,108.54

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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.