Home / 11,385.54-17,078.23-8,757.72

Finding the Fourth Proportional to 11,385.54, 17,078.23 and 8,757.72

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Solution

The fourth proportional to 11,385.54, 17,078.23 and 8,757.72 is: 13,136.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,385.54 : 17,078.23 = 8,757.72 : x
  2. Step 2: Convert to fraction form
    11,385.54/17,078.23 = 8,757.72/x
  3. Step 3: Cross multiply
    11,385.54x = 17,078.23 × 8,757.72
  4. Step 4: Simplify right side
    11,385.54x = 149,566,431.43
  5. Step 5: Solve for x
    x = 149,566,431.43/11,385.54
  6. Step 6: Final answer
    x = 13,136.53

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1.5x scale

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.