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Finding the Fourth Proportional to 15,086.02, 20,818.39 and 8,371.59

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Solution

The fourth proportional to 15,086.02, 20,818.39 and 8,371.59 is: 11,552.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,086.02 : 20,818.39 = 8,371.59 : x
  2. Step 2: Convert to fraction form
    15,086.02/20,818.39 = 8,371.59/x
  3. Step 3: Cross multiply
    15,086.02x = 20,818.39 × 8,371.59
  4. Step 4: Simplify right side
    15,086.02x = 174,283,025.54
  5. Step 5: Solve for x
    x = 174,283,025.54/15,086.02
  6. Step 6: Final answer
    x = 11,552.62

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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.