Home / 12,170.44-18,247.81-4,775.65

Finding the Fourth Proportional to 12,170.44, 18,247.81 and 4,775.65

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Solution

The fourth proportional to 12,170.44, 18,247.81 and 4,775.65 is: 7,160.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.44 : 18,247.81 = 4,775.65 : x
  2. Step 2: Convert to fraction form
    12,170.44/18,247.81 = 4,775.65/x
  3. Step 3: Cross multiply
    12,170.44x = 18,247.81 × 4,775.65
  4. Step 4: Simplify right side
    12,170.44x = 87,145,114.18
  5. Step 5: Solve for x
    x = 87,145,114.18/12,170.44
  6. Step 6: Final answer
    x = 7,160.39

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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.