Home / 13,310.91-18,369.05-8,006.09

Finding the Fourth Proportional to 13,310.91, 18,369.05 and 8,006.09

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Solution

The fourth proportional to 13,310.91, 18,369.05 and 8,006.09 is: 11,048.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,310.91 : 18,369.05 = 8,006.09 : x
  2. Step 2: Convert to fraction form
    13,310.91/18,369.05 = 8,006.09/x
  3. Step 3: Cross multiply
    13,310.91x = 18,369.05 × 8,006.09
  4. Step 4: Simplify right side
    13,310.91x = 147,064,135.64
  5. Step 5: Solve for x
    x = 147,064,135.64/13,310.91
  6. Step 6: Final answer
    x = 11,048.39

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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.