Home / 21,964.11-30,310.42-11,892.55

Finding the Fourth Proportional to 21,964.11, 30,310.42 and 11,892.55

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Solution

The fourth proportional to 21,964.11, 30,310.42 and 11,892.55 is: 16,411.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,964.11 : 30,310.42 = 11,892.55 : x
  2. Step 2: Convert to fraction form
    21,964.11/30,310.42 = 11,892.55/x
  3. Step 3: Cross multiply
    21,964.11x = 30,310.42 × 11,892.55
  4. Step 4: Simplify right side
    21,964.11x = 360,468,185.37
  5. Step 5: Solve for x
    x = 360,468,185.37/21,964.11
  6. Step 6: Final answer
    x = 16,411.69

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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.