Home / 13,372.13-18,453.69-7,403.90

Finding the Fourth Proportional to 13,372.13, 18,453.69 and 7,403.90

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Solution

The fourth proportional to 13,372.13, 18,453.69 and 7,403.90 is: 10,217.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,372.13 : 18,453.69 = 7,403.90 : x
  2. Step 2: Convert to fraction form
    13,372.13/18,453.69 = 7,403.90/x
  3. Step 3: Cross multiply
    13,372.13x = 18,453.69 × 7,403.90
  4. Step 4: Simplify right side
    13,372.13x = 136,629,183.12
  5. Step 5: Solve for x
    x = 136,629,183.12/13,372.13
  6. Step 6: Final answer
    x = 10,217.46

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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.