Home / 20,357.28-28,093.52-11,404.36

Finding the Fourth Proportional to 20,357.28, 28,093.52 and 11,404.36

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Solution

The fourth proportional to 20,357.28, 28,093.52 and 11,404.36 is: 15,738.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,357.28 : 28,093.52 = 11,404.36 : x
  2. Step 2: Convert to fraction form
    20,357.28/28,093.52 = 11,404.36/x
  3. Step 3: Cross multiply
    20,357.28x = 28,093.52 × 11,404.36
  4. Step 4: Simplify right side
    20,357.28x = 320,388,615.75
  5. Step 5: Solve for x
    x = 320,388,615.75/20,357.28
  6. Step 6: Final answer
    x = 15,738.28

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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.