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Finding the Fourth Proportional to 12,157.58, 18,241.83 and 7,484.69

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Solution

The fourth proportional to 12,157.58, 18,241.83 and 7,484.69 is: 11,230.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,157.58 : 18,241.83 = 7,484.69 : x
  2. Step 2: Convert to fraction form
    12,157.58/18,241.83 = 7,484.69/x
  3. Step 3: Cross multiply
    12,157.58x = 18,241.83 × 7,484.69
  4. Step 4: Simplify right side
    12,157.58x = 136,534,351.37
  5. Step 5: Solve for x
    x = 136,534,351.37/12,157.58
  6. Step 6: Final answer
    x = 11,230.39

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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.