Home / 20,358.77-28,096.25-11,409.15

Finding the Fourth Proportional to 20,358.77, 28,096.25 and 11,409.15

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Solution

The fourth proportional to 20,358.77, 28,096.25 and 11,409.15 is: 15,745.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,358.77 : 28,096.25 = 11,409.15 : x
  2. Step 2: Convert to fraction form
    20,358.77/28,096.25 = 11,409.15/x
  3. Step 3: Cross multiply
    20,358.77x = 28,096.25 × 11,409.15
  4. Step 4: Simplify right side
    20,358.77x = 320,554,273.64
  5. Step 5: Solve for x
    x = 320,554,273.64/20,358.77
  6. Step 6: Final answer
    x = 15,745.27

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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.