Home / 20,702.22-31,043.80-6,659.65

Finding the Fourth Proportional to 20,702.22, 31,043.80 and 6,659.65

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Solution

The fourth proportional to 20,702.22, 31,043.80 and 6,659.65 is: 9,986.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,702.22 : 31,043.80 = 6,659.65 : x
  2. Step 2: Convert to fraction form
    20,702.22/31,043.80 = 6,659.65/x
  3. Step 3: Cross multiply
    20,702.22x = 31,043.80 × 6,659.65
  4. Step 4: Simplify right side
    20,702.22x = 206,740,842.67
  5. Step 5: Solve for x
    x = 206,740,842.67/20,702.22
  6. Step 6: Final answer
    x = 9,986.41

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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.