Home / 20,908.28-28,853.33-11,348.21

Finding the Fourth Proportional to 20,908.28, 28,853.33 and 11,348.21

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Solution

The fourth proportional to 20,908.28, 28,853.33 and 11,348.21 is: 15,660.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,908.28 : 28,853.33 = 11,348.21 : x
  2. Step 2: Convert to fraction form
    20,908.28/28,853.33 = 11,348.21/x
  3. Step 3: Cross multiply
    20,908.28x = 28,853.33 × 11,348.21
  4. Step 4: Simplify right side
    20,908.28x = 327,433,447.03
  5. Step 5: Solve for x
    x = 327,433,447.03/20,908.28
  6. Step 6: Final answer
    x = 15,660.47

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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.