Home / 13,074.11-18,039.34-7,408.37

Finding the Fourth Proportional to 13,074.11, 18,039.34 and 7,408.37

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Solution

The fourth proportional to 13,074.11, 18,039.34 and 7,408.37 is: 10,221.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,074.11 : 18,039.34 = 7,408.37 : x
  2. Step 2: Convert to fraction form
    13,074.11/18,039.34 = 7,408.37/x
  3. Step 3: Cross multiply
    13,074.11x = 18,039.34 × 7,408.37
  4. Step 4: Simplify right side
    13,074.11x = 133,642,105.28
  5. Step 5: Solve for x
    x = 133,642,105.28/13,074.11
  6. Step 6: Final answer
    x = 10,221.89

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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.