Home / 31,917.30-47,872.32-12,195.42

Finding the Fourth Proportional to 31,917.30, 47,872.32 and 12,195.42

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Solution

The fourth proportional to 31,917.30, 47,872.32 and 12,195.42 is: 18,291.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,917.30 : 47,872.32 = 12,195.42 : x
  2. Step 2: Convert to fraction form
    31,917.30/47,872.32 = 12,195.42/x
  3. Step 3: Cross multiply
    31,917.30x = 47,872.32 × 12,195.42
  4. Step 4: Simplify right side
    31,917.30x = 583,823,048.77
  5. Step 5: Solve for x
    x = 583,823,048.77/31,917.30
  6. Step 6: Final answer
    x = 18,291.74

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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.