Home / 12,906.21-19,342.31-5,110.77

Finding the Fourth Proportional to 12,906.21, 19,342.31 and 5,110.77

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Solution

The fourth proportional to 12,906.21, 19,342.31 and 5,110.77 is: 7,659.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,906.21 : 19,342.31 = 5,110.77 : x
  2. Step 2: Convert to fraction form
    12,906.21/19,342.31 = 5,110.77/x
  3. Step 3: Cross multiply
    12,906.21x = 19,342.31 × 5,110.77
  4. Step 4: Simplify right side
    12,906.21x = 98,854,072.12
  5. Step 5: Solve for x
    x = 98,854,072.12/12,906.21
  6. Step 6: Final answer
    x = 7,659.42

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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.