Home / 12,917.32-19,379.76-6,680.86

Finding the Fourth Proportional to 12,917.32, 19,379.76 and 6,680.86

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Solution

The fourth proportional to 12,917.32, 19,379.76 and 6,680.86 is: 10,023.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,917.32 : 19,379.76 = 6,680.86 : x
  2. Step 2: Convert to fraction form
    12,917.32/19,379.76 = 6,680.86/x
  3. Step 3: Cross multiply
    12,917.32x = 19,379.76 × 6,680.86
  4. Step 4: Simplify right side
    12,917.32x = 129,473,463.39
  5. Step 5: Solve for x
    x = 129,473,463.39/12,917.32
  6. Step 6: Final answer
    x = 10,023.25

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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.