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Finding the Fourth Proportional to 12,137.34, 18,189.08 and 9,173.34

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Solution

The fourth proportional to 12,137.34, 18,189.08 and 9,173.34 is: 13,747.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,137.34 : 18,189.08 = 9,173.34 : x
  2. Step 2: Convert to fraction form
    12,137.34/18,189.08 = 9,173.34/x
  3. Step 3: Cross multiply
    12,137.34x = 18,189.08 × 9,173.34
  4. Step 4: Simplify right side
    12,137.34x = 166,854,615.13
  5. Step 5: Solve for x
    x = 166,854,615.13/12,137.34
  6. Step 6: Final answer
    x = 13,747.21

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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.