Home / 13,868.26-19,136.49-8,761.90

Finding the Fourth Proportional to 13,868.26, 19,136.49 and 8,761.90

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Solution

The fourth proportional to 13,868.26, 19,136.49 and 8,761.90 is: 12,090.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,868.26 : 19,136.49 = 8,761.90 : x
  2. Step 2: Convert to fraction form
    13,868.26/19,136.49 = 8,761.90/x
  3. Step 3: Cross multiply
    13,868.26x = 19,136.49 × 8,761.90
  4. Step 4: Simplify right side
    13,868.26x = 167,672,011.73
  5. Step 5: Solve for x
    x = 167,672,011.73/13,868.26
  6. Step 6: Final answer
    x = 12,090.34

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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.