Home / 20,792.18-28,693.30-11,360.94

Finding the Fourth Proportional to 20,792.18, 28,693.30 and 11,360.94

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Solution

The fourth proportional to 20,792.18, 28,693.30 and 11,360.94 is: 15,678.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,792.18 : 28,693.30 = 11,360.94 : x
  2. Step 2: Convert to fraction form
    20,792.18/28,693.30 = 11,360.94/x
  3. Step 3: Cross multiply
    20,792.18x = 28,693.30 × 11,360.94
  4. Step 4: Simplify right side
    20,792.18x = 325,982,859.70
  5. Step 5: Solve for x
    x = 325,982,859.70/20,792.18
  6. Step 6: Final answer
    x = 15,678.15

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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.