Home / 12,115.62-18,178.11-4,725.32

Finding the Fourth Proportional to 12,115.62, 18,178.11 and 4,725.32

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Solution

The fourth proportional to 12,115.62, 18,178.11 and 4,725.32 is: 7,089.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,115.62 : 18,178.11 = 4,725.32 : x
  2. Step 2: Convert to fraction form
    12,115.62/18,178.11 = 4,725.32/x
  3. Step 3: Cross multiply
    12,115.62x = 18,178.11 × 4,725.32
  4. Step 4: Simplify right side
    12,115.62x = 85,897,295.85
  5. Step 5: Solve for x
    x = 85,897,295.85/12,115.62
  6. Step 6: Final answer
    x = 7,089.80

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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.