Home / 12,113.70-18,167.43-4,321.38

Finding the Fourth Proportional to 12,113.70, 18,167.43 and 4,321.38

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Solution

The fourth proportional to 12,113.70, 18,167.43 and 4,321.38 is: 6,480.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,113.70 : 18,167.43 = 4,321.38 : x
  2. Step 2: Convert to fraction form
    12,113.70/18,167.43 = 4,321.38/x
  3. Step 3: Cross multiply
    12,113.70x = 18,167.43 × 4,321.38
  4. Step 4: Simplify right side
    12,113.70x = 78,508,368.65
  5. Step 5: Solve for x
    x = 78,508,368.65/12,113.70
  6. Step 6: Final answer
    x = 6,480.96

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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.