Home / 21,917.44-30,245.97-12,486.07

Finding the Fourth Proportional to 21,917.44, 30,245.97 and 12,486.07

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Solution

The fourth proportional to 21,917.44, 30,245.97 and 12,486.07 is: 17,230.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,917.44 : 30,245.97 = 12,486.07 : x
  2. Step 2: Convert to fraction form
    21,917.44/30,245.97 = 12,486.07/x
  3. Step 3: Cross multiply
    21,917.44x = 30,245.97 × 12,486.07
  4. Step 4: Simplify right side
    21,917.44x = 377,653,298.64
  5. Step 5: Solve for x
    x = 377,653,298.64/21,917.44
  6. Step 6: Final answer
    x = 17,230.72

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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.