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Finding the Fourth Proportional to 15,792.73, 21,793.83 and 8,719

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Solution

The fourth proportional to 15,792.73, 21,793.83 and 8,719 is: 12,032.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,792.73 : 21,793.83 = 8,719 : x
  2. Step 2: Convert to fraction form
    15,792.73/21,793.83 = 8,719/x
  3. Step 3: Cross multiply
    15,792.73x = 21,793.83 × 8,719
  4. Step 4: Simplify right side
    15,792.73x = 190,020,403.77
  5. Step 5: Solve for x
    x = 190,020,403.77/15,792.73
  6. Step 6: Final answer
    x = 12,032.14

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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.