Home / 20,281.44-30,400.62-11,965.37

Finding the Fourth Proportional to 20,281.44, 30,400.62 and 11,965.37

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Solution

The fourth proportional to 20,281.44, 30,400.62 and 11,965.37 is: 17,935.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.44 : 30,400.62 = 11,965.37 : x
  2. Step 2: Convert to fraction form
    20,281.44/30,400.62 = 11,965.37/x
  3. Step 3: Cross multiply
    20,281.44x = 30,400.62 × 11,965.37
  4. Step 4: Simplify right side
    20,281.44x = 363,754,640.66
  5. Step 5: Solve for x
    x = 363,754,640.66/20,281.44
  6. Step 6: Final answer
    x = 17,935.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.