Home / 13,381.88-18,467.68-8,076.62

Finding the Fourth Proportional to 13,381.88, 18,467.68 and 8,076.62

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Solution

The fourth proportional to 13,381.88, 18,467.68 and 8,076.62 is: 11,146.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,381.88 : 18,467.68 = 8,076.62 : x
  2. Step 2: Convert to fraction form
    13,381.88/18,467.68 = 8,076.62/x
  3. Step 3: Cross multiply
    13,381.88x = 18,467.68 × 8,076.62
  4. Step 4: Simplify right side
    13,381.88x = 149,156,433.64
  5. Step 5: Solve for x
    x = 149,156,433.64/13,381.88
  6. Step 6: Final answer
    x = 11,146.15

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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.