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Finding the Fourth Proportional to 13,382.50, 18,468.34 and 8,076.28

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Solution

The fourth proportional to 13,382.50, 18,468.34 and 8,076.28 is: 11,145.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,382.50 : 18,468.34 = 8,076.28 : x
  2. Step 2: Convert to fraction form
    13,382.50/18,468.34 = 8,076.28/x
  3. Step 3: Cross multiply
    13,382.50x = 18,468.34 × 8,076.28
  4. Step 4: Simplify right side
    13,382.50x = 149,155,484.98
  5. Step 5: Solve for x
    x = 149,155,484.98/13,382.50
  6. Step 6: Final answer
    x = 11,145.56

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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.