Home / 19,517.67-29,280.56-7,831.80

Finding the Fourth Proportional to 19,517.67, 29,280.56 and 7,831.80

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Solution

The fourth proportional to 19,517.67, 29,280.56 and 7,831.80 is: 11,749.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,517.67 : 29,280.56 = 7,831.80 : x
  2. Step 2: Convert to fraction form
    19,517.67/29,280.56 = 7,831.80/x
  3. Step 3: Cross multiply
    19,517.67x = 29,280.56 × 7,831.80
  4. Step 4: Simplify right side
    19,517.67x = 229,319,450.65
  5. Step 5: Solve for x
    x = 229,319,450.65/19,517.67
  6. Step 6: Final answer
    x = 11,749.33

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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.