Home / 11,315.58-16,979.94-4,741.20

Finding the Fourth Proportional to 11,315.58, 16,979.94 and 4,741.20

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Solution

The fourth proportional to 11,315.58, 16,979.94 and 4,741.20 is: 7,114.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,315.58 : 16,979.94 = 4,741.20 : x
  2. Step 2: Convert to fraction form
    11,315.58/16,979.94 = 4,741.20/x
  3. Step 3: Cross multiply
    11,315.58x = 16,979.94 × 4,741.20
  4. Step 4: Simplify right side
    11,315.58x = 80,505,291.53
  5. Step 5: Solve for x
    x = 80,505,291.53/11,315.58
  6. Step 6: Final answer
    x = 7,114.55

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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.