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Finding the Fourth Proportional to 13,163.05, 18,162.91 and 7,497.91

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Solution

The fourth proportional to 13,163.05, 18,162.91 and 7,497.91 is: 10,345.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,163.05 : 18,162.91 = 7,497.91 : x
  2. Step 2: Convert to fraction form
    13,163.05/18,162.91 = 7,497.91/x
  3. Step 3: Cross multiply
    13,163.05x = 18,162.91 × 7,497.91
  4. Step 4: Simplify right side
    13,163.05x = 136,183,864.52
  5. Step 5: Solve for x
    x = 136,183,864.52/13,163.05
  6. Step 6: Final answer
    x = 10,345.92

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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.