Home / 20,223.78-27,909.46-11,271.05

Finding the Fourth Proportional to 20,223.78, 27,909.46 and 11,271.05

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Solution

The fourth proportional to 20,223.78, 27,909.46 and 11,271.05 is: 15,554.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,223.78 : 27,909.46 = 11,271.05 : x
  2. Step 2: Convert to fraction form
    20,223.78/27,909.46 = 11,271.05/x
  3. Step 3: Cross multiply
    20,223.78x = 27,909.46 × 11,271.05
  4. Step 4: Simplify right side
    20,223.78x = 314,568,898.33
  5. Step 5: Solve for x
    x = 314,568,898.33/20,223.78
  6. Step 6: Final answer
    x = 15,554.41

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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.