Home / 11,319.02-16,979.67-3,921.78

Finding the Fourth Proportional to 11,319.02, 16,979.67 and 3,921.78

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Solution

The fourth proportional to 11,319.02, 16,979.67 and 3,921.78 is: 5,883.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,319.02 : 16,979.67 = 3,921.78 : x
  2. Step 2: Convert to fraction form
    11,319.02/16,979.67 = 3,921.78/x
  3. Step 3: Cross multiply
    11,319.02x = 16,979.67 × 3,921.78
  4. Step 4: Simplify right side
    11,319.02x = 66,590,530.21
  5. Step 5: Solve for x
    x = 66,590,530.21/11,319.02
  6. Step 6: Final answer
    x = 5,883.06

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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.