Home / 12,170.81-18,255.53-4,273.69

Finding the Fourth Proportional to 12,170.81, 18,255.53 and 4,273.69

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Solution

The fourth proportional to 12,170.81, 18,255.53 and 4,273.69 is: 6,410.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,170.81 : 18,255.53 = 4,273.69 : x
  2. Step 2: Convert to fraction form
    12,170.81/18,255.53 = 4,273.69/x
  3. Step 3: Cross multiply
    12,170.81x = 18,255.53 × 4,273.69
  4. Step 4: Simplify right side
    12,170.81x = 78,018,399.90
  5. Step 5: Solve for x
    x = 78,018,399.90/12,170.81
  6. Step 6: Final answer
    x = 6,410.29

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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.