Home / 20,223.75-27,908.79-11,271.05

Finding the Fourth Proportional to 20,223.75, 27,908.79 and 11,271.05

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Solution

The fourth proportional to 20,223.75, 27,908.79 and 11,271.05 is: 15,554.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,223.75 : 27,908.79 = 11,271.05 : x
  2. Step 2: Convert to fraction form
    20,223.75/27,908.79 = 11,271.05/x
  3. Step 3: Cross multiply
    20,223.75x = 27,908.79 × 11,271.05
  4. Step 4: Simplify right side
    20,223.75x = 314,561,227.99
  5. Step 5: Solve for x
    x = 314,561,227.99/20,223.75
  6. Step 6: Final answer
    x = 15,554.05

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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.