Home / 13,612.17-18,786.83-8,310.07

Finding the Fourth Proportional to 13,612.17, 18,786.83 and 8,310.07

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Solution

The fourth proportional to 13,612.17, 18,786.83 and 8,310.07 is: 11,469.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,612.17 : 18,786.83 = 8,310.07 : x
  2. Step 2: Convert to fraction form
    13,612.17/18,786.83 = 8,310.07/x
  3. Step 3: Cross multiply
    13,612.17x = 18,786.83 × 8,310.07
  4. Step 4: Simplify right side
    13,612.17x = 156,119,872.38
  5. Step 5: Solve for x
    x = 156,119,872.38/13,612.17
  6. Step 6: Final answer
    x = 11,469.14

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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.