Home / 21,150.11-29,192.40-12,202.95

Finding the Fourth Proportional to 21,150.11, 29,192.40 and 12,202.95

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Solution

The fourth proportional to 21,150.11, 29,192.40 and 12,202.95 is: 16,843.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,150.11 : 29,192.40 = 12,202.95 : x
  2. Step 2: Convert to fraction form
    21,150.11/29,192.40 = 12,202.95/x
  3. Step 3: Cross multiply
    21,150.11x = 29,192.40 × 12,202.95
  4. Step 4: Simplify right side
    21,150.11x = 356,233,507.05
  5. Step 5: Solve for x
    x = 356,233,507.05/21,150.11
  6. Step 6: Final answer
    x = 16,843.10

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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.