Home / 13,142.38-18,136.83-8,038.66

Finding the Fourth Proportional to 13,142.38, 18,136.83 and 8,038.66

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Solution

The fourth proportional to 13,142.38, 18,136.83 and 8,038.66 is: 11,093.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,142.38 : 18,136.83 = 8,038.66 : x
  2. Step 2: Convert to fraction form
    13,142.38/18,136.83 = 8,038.66/x
  3. Step 3: Cross multiply
    13,142.38x = 18,136.83 × 8,038.66
  4. Step 4: Simplify right side
    13,142.38x = 145,795,809.85
  5. Step 5: Solve for x
    x = 145,795,809.85/13,142.38
  6. Step 6: Final answer
    x = 11,093.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.