Home / 13,163.72-18,177.01-9,398.43

Finding the Fourth Proportional to 13,163.72, 18,177.01 and 9,398.43

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Solution

The fourth proportional to 13,163.72, 18,177.01 and 9,398.43 is: 12,977.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,163.72 : 18,177.01 = 9,398.43 : x
  2. Step 2: Convert to fraction form
    13,163.72/18,177.01 = 9,398.43/x
  3. Step 3: Cross multiply
    13,163.72x = 18,177.01 × 9,398.43
  4. Step 4: Simplify right side
    13,163.72x = 170,835,332.60
  5. Step 5: Solve for x
    x = 170,835,332.60/13,163.72
  6. Step 6: Final answer
    x = 12,977.74

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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.