Home / 20,792.31-28,693.13-11,360.85

Finding the Fourth Proportional to 20,792.31, 28,693.13 and 11,360.85

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Solution

The fourth proportional to 20,792.31, 28,693.13 and 11,360.85 is: 15,677.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.31 : 28,693.13 = 11,360.85 : x
  2. Step 2: Convert to fraction form
    20,792.31/28,693.13 = 11,360.85/x
  3. Step 3: Cross multiply
    20,792.31x = 28,693.13 × 11,360.85
  4. Step 4: Simplify right side
    20,792.31x = 325,978,289.16
  5. Step 5: Solve for x
    x = 325,978,289.16/20,792.31
  6. Step 6: Final answer
    x = 15,677.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.