Home / 20,928.33-28,881.09-11,496.89

Finding the Fourth Proportional to 20,928.33, 28,881.09 and 11,496.89

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Solution

The fourth proportional to 20,928.33, 28,881.09 and 11,496.89 is: 15,865.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,928.33 : 28,881.09 = 11,496.89 : x
  2. Step 2: Convert to fraction form
    20,928.33/28,881.09 = 11,496.89/x
  3. Step 3: Cross multiply
    20,928.33x = 28,881.09 × 11,496.89
  4. Step 4: Simplify right side
    20,928.33x = 332,042,570.40
  5. Step 5: Solve for x
    x = 332,042,570.40/20,928.33
  6. Step 6: Final answer
    x = 15,865.70

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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.