Home / 20,650.06-28,496.46-11,218.60

Finding the Fourth Proportional to 20,650.06, 28,496.46 and 11,218.60

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Solution

The fourth proportional to 20,650.06, 28,496.46 and 11,218.60 is: 15,481.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,650.06 : 28,496.46 = 11,218.60 : x
  2. Step 2: Convert to fraction form
    20,650.06/28,496.46 = 11,218.60/x
  3. Step 3: Cross multiply
    20,650.06x = 28,496.46 × 11,218.60
  4. Step 4: Simplify right side
    20,650.06x = 319,690,386.16
  5. Step 5: Solve for x
    x = 319,690,386.16/20,650.06
  6. Step 6: Final answer
    x = 15,481.33

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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.