Home / 21,151.11-29,193.78-12,203.95

Finding the Fourth Proportional to 21,151.11, 29,193.78 and 12,203.95

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Solution

The fourth proportional to 21,151.11, 29,193.78 and 12,203.95 is: 16,844.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,151.11 : 29,193.78 = 12,203.95 : x
  2. Step 2: Convert to fraction form
    21,151.11/29,193.78 = 12,203.95/x
  3. Step 3: Cross multiply
    21,151.11x = 29,193.78 × 12,203.95
  4. Step 4: Simplify right side
    21,151.11x = 356,279,431.43
  5. Step 5: Solve for x
    x = 356,279,431.43/21,151.11
  6. Step 6: Final answer
    x = 16,844.48

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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.