Home / 20,610.14-28,456.40-18,201.68

Finding the Fourth Proportional to 20,610.14, 28,456.40 and 18,201.68

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Solution

The fourth proportional to 20,610.14, 28,456.40 and 18,201.68 is: 25,131.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,610.14 : 28,456.40 = 18,201.68 : x
  2. Step 2: Convert to fraction form
    20,610.14/28,456.40 = 18,201.68/x
  3. Step 3: Cross multiply
    20,610.14x = 28,456.40 × 18,201.68
  4. Step 4: Simplify right side
    20,610.14x = 517,954,189.97
  5. Step 5: Solve for x
    x = 517,954,189.97/20,610.14
  6. Step 6: Final answer
    x = 25,131.03

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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.