Home / 20,275.11-27,992.49-13,912.36

Finding the Fourth Proportional to 20,275.11, 27,992.49 and 13,912.36

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Solution

The fourth proportional to 20,275.11, 27,992.49 and 13,912.36 is: 19,207.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,275.11 : 27,992.49 = 13,912.36 : x
  2. Step 2: Convert to fraction form
    20,275.11/27,992.49 = 13,912.36/x
  3. Step 3: Cross multiply
    20,275.11x = 27,992.49 × 13,912.36
  4. Step 4: Simplify right side
    20,275.11x = 389,441,476.02
  5. Step 5: Solve for x
    x = 389,441,476.02/20,275.11
  6. Step 6: Final answer
    x = 19,207.86

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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.