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Finding the Fourth Proportional to 13,322.84, 18,385.44 and 7,354.88

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Solution

The fourth proportional to 13,322.84, 18,385.44 and 7,354.88 is: 10,149.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,322.84 : 18,385.44 = 7,354.88 : x
  2. Step 2: Convert to fraction form
    13,322.84/18,385.44 = 7,354.88/x
  3. Step 3: Cross multiply
    13,322.84x = 18,385.44 × 7,354.88
  4. Step 4: Simplify right side
    13,322.84x = 135,222,704.95
  5. Step 5: Solve for x
    x = 135,222,704.95/13,322.84
  6. Step 6: Final answer
    x = 10,149.69

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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.