Home / 20,441.90-28,208.52-11,489.27

Finding the Fourth Proportional to 20,441.90, 28,208.52 and 11,489.27

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Solution

The fourth proportional to 20,441.90, 28,208.52 and 11,489.27 is: 15,854.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,441.90 : 28,208.52 = 11,489.27 : x
  2. Step 2: Convert to fraction form
    20,441.90/28,208.52 = 11,489.27/x
  3. Step 3: Cross multiply
    20,441.90x = 28,208.52 × 11,489.27
  4. Step 4: Simplify right side
    20,441.90x = 324,095,161.54
  5. Step 5: Solve for x
    x = 324,095,161.54/20,441.90
  6. Step 6: Final answer
    x = 15,854.46

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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.