Home / 20,209-27,888.42-11,827.12

Finding the Fourth Proportional to 20,209, 27,888.42 and 11,827.12

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Solution

The fourth proportional to 20,209, 27,888.42 and 11,827.12 is: 16,321.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,209 : 27,888.42 = 11,827.12 : x
  2. Step 2: Convert to fraction form
    20,209/27,888.42 = 11,827.12/x
  3. Step 3: Cross multiply
    20,209x = 27,888.42 × 11,827.12
  4. Step 4: Simplify right side
    20,209x = 329,839,689.95
  5. Step 5: Solve for x
    x = 329,839,689.95/20,209
  6. Step 6: Final answer
    x = 16,321.43

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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.