Home / 21,189.93-31,793.27-8,045.79

Finding the Fourth Proportional to 21,189.93, 31,793.27 and 8,045.79

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Solution

The fourth proportional to 21,189.93, 31,793.27 and 8,045.79 is: 12,071.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,189.93 : 31,793.27 = 8,045.79 : x
  2. Step 2: Convert to fraction form
    21,189.93/31,793.27 = 8,045.79/x
  3. Step 3: Cross multiply
    21,189.93x = 31,793.27 × 8,045.79
  4. Step 4: Simplify right side
    21,189.93x = 255,801,933.60
  5. Step 5: Solve for x
    x = 255,801,933.60/21,189.93
  6. Step 6: Final answer
    x = 12,071.86

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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.