Home / 20,927.31-31,390.56-6,135.90

Finding the Fourth Proportional to 20,927.31, 31,390.56 and 6,135.90

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Solution

The fourth proportional to 20,927.31, 31,390.56 and 6,135.90 is: 9,203.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,927.31 : 31,390.56 = 6,135.90 : x
  2. Step 2: Convert to fraction form
    20,927.31/31,390.56 = 6,135.90/x
  3. Step 3: Cross multiply
    20,927.31x = 31,390.56 × 6,135.90
  4. Step 4: Simplify right side
    20,927.31x = 192,609,413.22
  5. Step 5: Solve for x
    x = 192,609,413.22/20,927.31
  6. Step 6: Final answer
    x = 9,203.73

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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.