Home / 20,209.27-27,888.75-11,257.56

Finding the Fourth Proportional to 20,209.27, 27,888.75 and 11,257.56

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Solution

The fourth proportional to 20,209.27, 27,888.75 and 11,257.56 is: 15,535.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,209.27 : 27,888.75 = 11,257.56 : x
  2. Step 2: Convert to fraction form
    20,209.27/27,888.75 = 11,257.56/x
  3. Step 3: Cross multiply
    20,209.27x = 27,888.75 × 11,257.56
  4. Step 4: Simplify right side
    20,209.27x = 313,959,276.45
  5. Step 5: Solve for x
    x = 313,959,276.45/20,209.27
  6. Step 6: Final answer
    x = 15,535.41

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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.