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Finding the Fourth Proportional to 13,310.84, 18,366.94 and 7,645.84

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Solution

The fourth proportional to 13,310.84, 18,366.94 and 7,645.84 is: 10,550.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,310.84 : 18,366.94 = 7,645.84 : x
  2. Step 2: Convert to fraction form
    13,310.84/18,366.94 = 7,645.84/x
  3. Step 3: Cross multiply
    13,310.84x = 18,366.94 × 7,645.84
  4. Step 4: Simplify right side
    13,310.84x = 140,430,684.53
  5. Step 5: Solve for x
    x = 140,430,684.53/13,310.84
  6. Step 6: Final answer
    x = 10,550.10

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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.