Home / 12,249.28-16,879.81-8,702.56

Finding the Fourth Proportional to 12,249.28, 16,879.81 and 8,702.56

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Solution

The fourth proportional to 12,249.28, 16,879.81 and 8,702.56 is: 11,992.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,249.28 : 16,879.81 = 8,702.56 : x
  2. Step 2: Convert to fraction form
    12,249.28/16,879.81 = 8,702.56/x
  3. Step 3: Cross multiply
    12,249.28x = 16,879.81 × 8,702.56
  4. Step 4: Simplify right side
    12,249.28x = 146,897,431.40
  5. Step 5: Solve for x
    x = 146,897,431.40/12,249.28
  6. Step 6: Final answer
    x = 11,992.34

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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.