Home / 20,496.78-28,283.18-11,544.12

Finding the Fourth Proportional to 20,496.78, 28,283.18 and 11,544.12

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Solution

The fourth proportional to 20,496.78, 28,283.18 and 11,544.12 is: 15,929.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,496.78 : 28,283.18 = 11,544.12 : x
  2. Step 2: Convert to fraction form
    20,496.78/28,283.18 = 11,544.12/x
  3. Step 3: Cross multiply
    20,496.78x = 28,283.18 × 11,544.12
  4. Step 4: Simplify right side
    20,496.78x = 326,504,366.18
  5. Step 5: Solve for x
    x = 326,504,366.18/20,496.78
  6. Step 6: Final answer
    x = 15,929.54

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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.