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Finding the Fourth Proportional to 13,057.92, 18,018.18 and 8,338.86

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Solution

The fourth proportional to 13,057.92, 18,018.18 and 8,338.86 is: 11,506.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,057.92 : 18,018.18 = 8,338.86 : x
  2. Step 2: Convert to fraction form
    13,057.92/18,018.18 = 8,338.86/x
  3. Step 3: Cross multiply
    13,057.92x = 18,018.18 × 8,338.86
  4. Step 4: Simplify right side
    13,057.92x = 150,251,080.47
  5. Step 5: Solve for x
    x = 150,251,080.47/13,057.92
  6. Step 6: Final answer
    x = 11,506.51

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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.