Home / 12,887.12-19,299.66-7,326.86

Finding the Fourth Proportional to 12,887.12, 19,299.66 and 7,326.86

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Solution

The fourth proportional to 12,887.12, 19,299.66 and 7,326.86 is: 10,972.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,887.12 : 19,299.66 = 7,326.86 : x
  2. Step 2: Convert to fraction form
    12,887.12/19,299.66 = 7,326.86/x
  3. Step 3: Cross multiply
    12,887.12x = 19,299.66 × 7,326.86
  4. Step 4: Simplify right side
    12,887.12x = 141,405,906.87
  5. Step 5: Solve for x
    x = 141,405,906.87/12,887.12
  6. Step 6: Final answer
    x = 10,972.65

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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.