Home / 21,996.78-30,351.15-12,568.38

Finding the Fourth Proportional to 21,996.78, 30,351.15 and 12,568.38

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Solution

The fourth proportional to 21,996.78, 30,351.15 and 12,568.38 is: 17,341.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,996.78 : 30,351.15 = 12,568.38 : x
  2. Step 2: Convert to fraction form
    21,996.78/30,351.15 = 12,568.38/x
  3. Step 3: Cross multiply
    21,996.78x = 30,351.15 × 12,568.38
  4. Step 4: Simplify right side
    21,996.78x = 381,464,786.64
  5. Step 5: Solve for x
    x = 381,464,786.64/21,996.78
  6. Step 6: Final answer
    x = 17,341.85

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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.