Home / 12,305.74-18,439.71-8,351.86

Finding the Fourth Proportional to 12,305.74, 18,439.71 and 8,351.86

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Solution

The fourth proportional to 12,305.74, 18,439.71 and 8,351.86 is: 12,514.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,305.74 : 18,439.71 = 8,351.86 : x
  2. Step 2: Convert to fraction form
    12,305.74/18,439.71 = 8,351.86/x
  3. Step 3: Cross multiply
    12,305.74x = 18,439.71 × 8,351.86
  4. Step 4: Simplify right side
    12,305.74x = 154,005,876.36
  5. Step 5: Solve for x
    x = 154,005,876.36/12,305.74
  6. Step 6: Final answer
    x = 12,514.96

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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.