Home / 20,827.91-31,245.10-6,784.65

Finding the Fourth Proportional to 20,827.91, 31,245.10 and 6,784.65

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Solution

The fourth proportional to 20,827.91, 31,245.10 and 6,784.65 is: 10,178.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.91 : 31,245.10 = 6,784.65 : x
  2. Step 2: Convert to fraction form
    20,827.91/31,245.10 = 6,784.65/x
  3. Step 3: Cross multiply
    20,827.91x = 31,245.10 × 6,784.65
  4. Step 4: Simplify right side
    20,827.91x = 211,987,050.75
  5. Step 5: Solve for x
    x = 211,987,050.75/20,827.91
  6. Step 6: Final answer
    x = 10,178.03

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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.