Home / 12,677.08-18,987.94-7,731.73

Finding the Fourth Proportional to 12,677.08, 18,987.94 and 7,731.73

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Solution

The fourth proportional to 12,677.08, 18,987.94 and 7,731.73 is: 11,580.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,677.08 : 18,987.94 = 7,731.73 : x
  2. Step 2: Convert to fraction form
    12,677.08/18,987.94 = 7,731.73/x
  3. Step 3: Cross multiply
    12,677.08x = 18,987.94 × 7,731.73
  4. Step 4: Simplify right side
    12,677.08x = 146,809,627.08
  5. Step 5: Solve for x
    x = 146,809,627.08/12,677.08
  6. Step 6: Final answer
    x = 11,580.71

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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.