Home / 20,792.67-31,188.46-7,639.35

Finding the Fourth Proportional to 20,792.67, 31,188.46 and 7,639.35

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Solution

The fourth proportional to 20,792.67, 31,188.46 and 7,639.35 is: 11,458.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.67 : 31,188.46 = 7,639.35 : x
  2. Step 2: Convert to fraction form
    20,792.67/31,188.46 = 7,639.35/x
  3. Step 3: Cross multiply
    20,792.67x = 31,188.46 × 7,639.35
  4. Step 4: Simplify right side
    20,792.67x = 238,259,561.90
  5. Step 5: Solve for x
    x = 238,259,561.90/20,792.67
  6. Step 6: Final answer
    x = 11,458.82

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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.