Home / 21,249.97-31,874.91-10,122.91

Finding the Fourth Proportional to 21,249.97, 31,874.91 and 10,122.91

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Solution

The fourth proportional to 21,249.97, 31,874.91 and 10,122.91 is: 15,184.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,249.97 : 31,874.91 = 10,122.91 : x
  2. Step 2: Convert to fraction form
    21,249.97/31,874.91 = 10,122.91/x
  3. Step 3: Cross multiply
    21,249.97x = 31,874.91 × 10,122.91
  4. Step 4: Simplify right side
    21,249.97x = 322,666,845.19
  5. Step 5: Solve for x
    x = 322,666,845.19/21,249.97
  6. Step 6: Final answer
    x = 15,184.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.