Home / 13,712.70-20,569.05-8,791.95

Finding the Fourth Proportional to 13,712.70, 20,569.05 and 8,791.95

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Solution

The fourth proportional to 13,712.70, 20,569.05 and 8,791.95 is: 13,187.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,712.70 : 20,569.05 = 8,791.95 : x
  2. Step 2: Convert to fraction form
    13,712.70/20,569.05 = 8,791.95/x
  3. Step 3: Cross multiply
    13,712.70x = 20,569.05 × 8,791.95
  4. Step 4: Simplify right side
    13,712.70x = 180,842,059.15
  5. Step 5: Solve for x
    x = 180,842,059.15/13,712.70
  6. Step 6: Final answer
    x = 13,187.93

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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.