Home / 13,163.87-18,167.28-7,500.35

Finding the Fourth Proportional to 13,163.87, 18,167.28 and 7,500.35

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Solution

The fourth proportional to 13,163.87, 18,167.28 and 7,500.35 is: 10,351.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,163.87 : 18,167.28 = 7,500.35 : x
  2. Step 2: Convert to fraction form
    13,163.87/18,167.28 = 7,500.35/x
  3. Step 3: Cross multiply
    13,163.87x = 18,167.28 × 7,500.35
  4. Step 4: Simplify right side
    13,163.87x = 136,260,958.55
  5. Step 5: Solve for x
    x = 136,260,958.55/13,163.87
  6. Step 6: Final answer
    x = 10,351.13

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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.