Home / 20,275.88-27,993.06-13,912.92

Finding the Fourth Proportional to 20,275.88, 27,993.06 and 13,912.92

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Solution

The fourth proportional to 20,275.88, 27,993.06 and 13,912.92 is: 19,208.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,275.88 : 27,993.06 = 13,912.92 : x
  2. Step 2: Convert to fraction form
    20,275.88/27,993.06 = 13,912.92/x
  3. Step 3: Cross multiply
    20,275.88x = 27,993.06 × 13,912.92
  4. Step 4: Simplify right side
    20,275.88x = 389,465,204.34
  5. Step 5: Solve for x
    x = 389,465,204.34/20,275.88
  6. Step 6: Final answer
    x = 19,208.31

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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.