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Finding the Fourth Proportional to 13,396.84, 20,069.10 and 6,366.84

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Solution

The fourth proportional to 13,396.84, 20,069.10 and 6,366.84 is: 9,537.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,396.84 : 20,069.10 = 6,366.84 : x
  2. Step 2: Convert to fraction form
    13,396.84/20,069.10 = 6,366.84/x
  3. Step 3: Cross multiply
    13,396.84x = 20,069.10 × 6,366.84
  4. Step 4: Simplify right side
    13,396.84x = 127,776,748.64
  5. Step 5: Solve for x
    x = 127,776,748.64/13,396.84
  6. Step 6: Final answer
    x = 9,537.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.