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Finding the Fourth Proportional to 21,195, 29,249.10 and 11,763.63

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Solution

The fourth proportional to 21,195, 29,249.10 and 11,763.63 is: 16,233.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,195 : 29,249.10 = 11,763.63 : x
  2. Step 2: Convert to fraction form
    21,195/29,249.10 = 11,763.63/x
  3. Step 3: Cross multiply
    21,195x = 29,249.10 × 11,763.63
  4. Step 4: Simplify right side
    21,195x = 344,075,590.23
  5. Step 5: Solve for x
    x = 344,075,590.23/21,195
  6. Step 6: Final answer
    x = 16,233.81

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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.