Home / 21,945.25-30,284.31-11,873.68

Finding the Fourth Proportional to 21,945.25, 30,284.31 and 11,873.68

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Solution

The fourth proportional to 21,945.25, 30,284.31 and 11,873.68 is: 16,385.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,945.25 : 30,284.31 = 11,873.68 : x
  2. Step 2: Convert to fraction form
    21,945.25/30,284.31 = 11,873.68/x
  3. Step 3: Cross multiply
    21,945.25x = 30,284.31 × 11,873.68
  4. Step 4: Simplify right side
    21,945.25x = 359,586,205.96
  5. Step 5: Solve for x
    x = 359,586,205.96/21,945.25
  6. Step 6: Final answer
    x = 16,385.61

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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.