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Finding the Fourth Proportional to 13,366, 18,443.54 and 7,396.84

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Solution

The fourth proportional to 13,366, 18,443.54 and 7,396.84 is: 10,206.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,366 : 18,443.54 = 7,396.84 : x
  2. Step 2: Convert to fraction form
    13,366/18,443.54 = 7,396.84/x
  3. Step 3: Cross multiply
    13,366x = 18,443.54 × 7,396.84
  4. Step 4: Simplify right side
    13,366x = 136,423,914.41
  5. Step 5: Solve for x
    x = 136,423,914.41/13,366
  6. Step 6: Final answer
    x = 10,206.79

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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.