Home / 20,928.33-28,881.29-11,496.88

Finding the Fourth Proportional to 20,928.33, 28,881.29 and 11,496.88

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Solution

The fourth proportional to 20,928.33, 28,881.29 and 11,496.88 is: 15,865.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928.33 : 28,881.29 = 11,496.88 : x
  2. Step 2: Convert to fraction form
    20,928.33/28,881.29 = 11,496.88/x
  3. Step 3: Cross multiply
    20,928.33x = 28,881.29 × 11,496.88
  4. Step 4: Simplify right side
    20,928.33x = 332,044,725.38
  5. Step 5: Solve for x
    x = 332,044,725.38/20,928.33
  6. Step 6: Final answer
    x = 15,865.80

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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.