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Finding the Fourth Proportional to 13,245.62, 18,261.09 and 11,349

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Solution

The fourth proportional to 13,245.62, 18,261.09 and 11,349 is: 15,646.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,245.62 : 18,261.09 = 11,349 : x
  2. Step 2: Convert to fraction form
    13,245.62/18,261.09 = 11,349/x
  3. Step 3: Cross multiply
    13,245.62x = 18,261.09 × 11,349
  4. Step 4: Simplify right side
    13,245.62x = 207,245,110.41
  5. Step 5: Solve for x
    x = 207,245,110.41/13,245.62
  6. Step 6: Final answer
    x = 15,646.32

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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.