Home / 20,224.71-27,909.33-11,271.78

Finding the Fourth Proportional to 20,224.71, 27,909.33 and 11,271.78

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Solution

The fourth proportional to 20,224.71, 27,909.33 and 11,271.78 is: 15,554.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,224.71 : 27,909.33 = 11,271.78 : x
  2. Step 2: Convert to fraction form
    20,224.71/27,909.33 = 11,271.78/x
  3. Step 3: Cross multiply
    20,224.71x = 27,909.33 × 11,271.78
  4. Step 4: Simplify right side
    20,224.71x = 314,587,785.44
  5. Step 5: Solve for x
    x = 314,587,785.44/20,224.71
  6. Step 6: Final answer
    x = 15,554.63

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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.