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Finding the Fourth Proportional to 15,076.14, 20,806.31 and 8,363.93

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Solution

The fourth proportional to 15,076.14, 20,806.31 and 8,363.93 is: 11,542.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,076.14 : 20,806.31 = 8,363.93 : x
  2. Step 2: Convert to fraction form
    15,076.14/20,806.31 = 8,363.93/x
  3. Step 3: Cross multiply
    15,076.14x = 20,806.31 × 8,363.93
  4. Step 4: Simplify right side
    15,076.14x = 174,022,374.55
  5. Step 5: Solve for x
    x = 174,022,374.55/15,076.14
  6. Step 6: Final answer
    x = 11,542.90

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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.