Home / 13,622.42-18,799.34-7,961.27

Finding the Fourth Proportional to 13,622.42, 18,799.34 and 7,961.27

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Solution

The fourth proportional to 13,622.42, 18,799.34 and 7,961.27 is: 10,986.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,622.42 : 18,799.34 = 7,961.27 : x
  2. Step 2: Convert to fraction form
    13,622.42/18,799.34 = 7,961.27/x
  3. Step 3: Cross multiply
    13,622.42x = 18,799.34 × 7,961.27
  4. Step 4: Simplify right side
    13,622.42x = 149,666,487.76
  5. Step 5: Solve for x
    x = 149,666,487.76/13,622.42
  6. Step 6: Final answer
    x = 10,986.78

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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.