Home / 20,758.39-28,647.26-11,327.47

Finding the Fourth Proportional to 20,758.39, 28,647.26 and 11,327.47

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Solution

The fourth proportional to 20,758.39, 28,647.26 and 11,327.47 is: 15,632.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,758.39 : 28,647.26 = 11,327.47 : x
  2. Step 2: Convert to fraction form
    20,758.39/28,647.26 = 11,327.47/x
  3. Step 3: Cross multiply
    20,758.39x = 28,647.26 × 11,327.47
  4. Step 4: Simplify right side
    20,758.39x = 324,500,863.31
  5. Step 5: Solve for x
    x = 324,500,863.31/20,758.39
  6. Step 6: Final answer
    x = 15,632.28

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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.