Home / 11,331.26-15,639.02-9,439.85

Finding the Fourth Proportional to 11,331.26, 15,639.02 and 9,439.85

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Solution

The fourth proportional to 11,331.26, 15,639.02 and 9,439.85 is: 13,028.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,331.26 : 15,639.02 = 9,439.85 : x
  2. Step 2: Convert to fraction form
    11,331.26/15,639.02 = 9,439.85/x
  3. Step 3: Cross multiply
    11,331.26x = 15,639.02 × 9,439.85
  4. Step 4: Simplify right side
    11,331.26x = 147,630,065.64
  5. Step 5: Solve for x
    x = 147,630,065.64/11,331.26
  6. Step 6: Final answer
    x = 13,028.56

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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.