Home / 12,147-16,761.60-7,110.96

Finding the Fourth Proportional to 12,147, 16,761.60 and 7,110.96

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Solution

The fourth proportional to 12,147, 16,761.60 and 7,110.96 is: 9,812.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,147 : 16,761.60 = 7,110.96 : x
  2. Step 2: Convert to fraction form
    12,147/16,761.60 = 7,110.96/x
  3. Step 3: Cross multiply
    12,147x = 16,761.60 × 7,110.96
  4. Step 4: Simplify right side
    12,147x = 119,191,067.14
  5. Step 5: Solve for x
    x = 119,191,067.14/12,147
  6. Step 6: Final answer
    x = 9,812.39

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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.