Home / 11,721.12-17,579.78-4,329.06

Finding the Fourth Proportional to 11,721.12, 17,579.78 and 4,329.06

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Solution

The fourth proportional to 11,721.12, 17,579.78 and 4,329.06 is: 6,492.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,721.12 : 17,579.78 = 4,329.06 : x
  2. Step 2: Convert to fraction form
    11,721.12/17,579.78 = 4,329.06/x
  3. Step 3: Cross multiply
    11,721.12x = 17,579.78 × 4,329.06
  4. Step 4: Simplify right side
    11,721.12x = 76,103,851.07
  5. Step 5: Solve for x
    x = 76,103,851.07/11,721.12
  6. Step 6: Final answer
    x = 6,492.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.