Home / 21,917.92-30,246.60-12,486.28

Finding the Fourth Proportional to 21,917.92, 30,246.60 and 12,486.28

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Solution

The fourth proportional to 21,917.92, 30,246.60 and 12,486.28 is: 17,230.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,917.92 : 30,246.60 = 12,486.28 : x
  2. Step 2: Convert to fraction form
    21,917.92/30,246.60 = 12,486.28/x
  3. Step 3: Cross multiply
    21,917.92x = 30,246.60 × 12,486.28
  4. Step 4: Simplify right side
    21,917.92x = 377,667,516.65
  5. Step 5: Solve for x
    x = 377,667,516.65/21,917.92
  6. Step 6: Final answer
    x = 17,230.99

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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.