Home / 21,910.29-30,249.87-17,391.42

Finding the Fourth Proportional to 21,910.29, 30,249.87 and 17,391.42

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Solution

The fourth proportional to 21,910.29, 30,249.87 and 17,391.42 is: 24,011.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,910.29 : 30,249.87 = 17,391.42 : x
  2. Step 2: Convert to fraction form
    21,910.29/30,249.87 = 17,391.42/x
  3. Step 3: Cross multiply
    21,910.29x = 30,249.87 × 17,391.42
  4. Step 4: Simplify right side
    21,910.29x = 526,088,194.12
  5. Step 5: Solve for x
    x = 526,088,194.12/21,910.29
  6. Step 6: Final answer
    x = 24,011.01

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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.