Home / 15,515.64-23,261.30-8,118.72

Finding the Fourth Proportional to 15,515.64, 23,261.30 and 8,118.72

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Solution

The fourth proportional to 15,515.64, 23,261.30 and 8,118.72 is: 12,171.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,515.64 : 23,261.30 = 8,118.72 : x
  2. Step 2: Convert to fraction form
    15,515.64/23,261.30 = 8,118.72/x
  3. Step 3: Cross multiply
    15,515.64x = 23,261.30 × 8,118.72
  4. Step 4: Simplify right side
    15,515.64x = 188,851,940.94
  5. Step 5: Solve for x
    x = 188,851,940.94/15,515.64
  6. Step 6: Final answer
    x = 12,171.71

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