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Finding the Fourth Proportional to 13,697.01, 18,892.11 and 13,239.75

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Solution

The fourth proportional to 13,697.01, 18,892.11 and 13,239.75 is: 18,261.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,697.01 : 18,892.11 = 13,239.75 : x
  2. Step 2: Convert to fraction form
    13,697.01/18,892.11 = 13,239.75/x
  3. Step 3: Cross multiply
    13,697.01x = 18,892.11 × 13,239.75
  4. Step 4: Simplify right side
    13,697.01x = 250,126,813.37
  5. Step 5: Solve for x
    x = 250,126,813.37/13,697.01
  6. Step 6: Final answer
    x = 18,261.42

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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.