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Finding the Fourth Proportional to 13,310.91, 18,367.07 and 7,645.91

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Solution

The fourth proportional to 13,310.91, 18,367.07 and 7,645.91 is: 10,550.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,310.91 : 18,367.07 = 7,645.91 : x
  2. Step 2: Convert to fraction form
    13,310.91/18,367.07 = 7,645.91/x
  3. Step 3: Cross multiply
    13,310.91x = 18,367.07 × 7,645.91
  4. Step 4: Simplify right side
    13,310.91x = 140,432,891.46
  5. Step 5: Solve for x
    x = 140,432,891.46/13,310.91
  6. Step 6: Final answer
    x = 10,550.21

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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.