Home / 20,769.54-28,661.59-11,816.85

Finding the Fourth Proportional to 20,769.54, 28,661.59 and 11,816.85

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Solution

The fourth proportional to 20,769.54, 28,661.59 and 11,816.85 is: 16,307.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.54 : 28,661.59 = 11,816.85 : x
  2. Step 2: Convert to fraction form
    20,769.54/28,661.59 = 11,816.85/x
  3. Step 3: Cross multiply
    20,769.54x = 28,661.59 × 11,816.85
  4. Step 4: Simplify right side
    20,769.54x = 338,689,638.14
  5. Step 5: Solve for x
    x = 338,689,638.14/20,769.54
  6. Step 6: Final answer
    x = 16,307.04

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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.