Home / 13,622.67-18,809.78-10,981.87

Finding the Fourth Proportional to 13,622.67, 18,809.78 and 10,981.87

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Solution

The fourth proportional to 13,622.67, 18,809.78 and 10,981.87 is: 15,163.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,622.67 : 18,809.78 = 10,981.87 : x
  2. Step 2: Convert to fraction form
    13,622.67/18,809.78 = 10,981.87/x
  3. Step 3: Cross multiply
    13,622.67x = 18,809.78 × 10,981.87
  4. Step 4: Simplify right side
    13,622.67x = 206,566,558.69
  5. Step 5: Solve for x
    x = 206,566,558.69/13,622.67
  6. Step 6: Final answer
    x = 15,163.44

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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.