Home / 13,340.39-18,410.10-7,372.43

Finding the Fourth Proportional to 13,340.39, 18,410.10 and 7,372.43

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Solution

The fourth proportional to 13,340.39, 18,410.10 and 7,372.43 is: 10,174.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.39 : 18,410.10 = 7,372.43 : x
  2. Step 2: Convert to fraction form
    13,340.39/18,410.10 = 7,372.43/x
  3. Step 3: Cross multiply
    13,340.39x = 18,410.10 × 7,372.43
  4. Step 4: Simplify right side
    13,340.39x = 135,727,136.68
  5. Step 5: Solve for x
    x = 135,727,136.68/13,340.39
  6. Step 6: Final answer
    x = 10,174.15

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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.