Home / 19,824.78-27,356.84-10,872.09

Finding the Fourth Proportional to 19,824.78, 27,356.84 and 10,872.09

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Solution

The fourth proportional to 19,824.78, 27,356.84 and 10,872.09 is: 15,002.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,824.78 : 27,356.84 = 10,872.09 : x
  2. Step 2: Convert to fraction form
    19,824.78/27,356.84 = 10,872.09/x
  3. Step 3: Cross multiply
    19,824.78x = 27,356.84 × 10,872.09
  4. Step 4: Simplify right side
    19,824.78x = 297,426,013.01
  5. Step 5: Solve for x
    x = 297,426,013.01/19,824.78
  6. Step 6: Final answer
    x = 15,002.74

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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.