Home / 13,340.45-18,410.22-7,372.51

Finding the Fourth Proportional to 13,340.45, 18,410.22 and 7,372.51

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Solution

The fourth proportional to 13,340.45, 18,410.22 and 7,372.51 is: 10,174.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.45 : 18,410.22 = 7,372.51 : x
  2. Step 2: Convert to fraction form
    13,340.45/18,410.22 = 7,372.51/x
  3. Step 3: Cross multiply
    13,340.45x = 18,410.22 × 7,372.51
  4. Step 4: Simplify right side
    13,340.45x = 135,729,531.05
  5. Step 5: Solve for x
    x = 135,729,531.05/13,340.45
  6. Step 6: Final answer
    x = 10,174.28

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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.