Home / 13,340.13-18,408.89-7,371.68

Finding the Fourth Proportional to 13,340.13, 18,408.89 and 7,371.68

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Solution

The fourth proportional to 13,340.13, 18,408.89 and 7,371.68 is: 10,172.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.13 : 18,408.89 = 7,371.68 : x
  2. Step 2: Convert to fraction form
    13,340.13/18,408.89 = 7,371.68/x
  3. Step 3: Cross multiply
    13,340.13x = 18,408.89 × 7,371.68
  4. Step 4: Simplify right side
    13,340.13x = 135,704,317.33
  5. Step 5: Solve for x
    x = 135,704,317.33/13,340.13
  6. Step 6: Final answer
    x = 10,172.64

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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.