Home / 13,340.57-18,408.36-7,372.33

Finding the Fourth Proportional to 13,340.57, 18,408.36 and 7,372.33

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Solution

The fourth proportional to 13,340.57, 18,408.36 and 7,372.33 is: 10,172.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.57 : 18,408.36 = 7,372.33 : x
  2. Step 2: Convert to fraction form
    13,340.57/18,408.36 = 7,372.33/x
  3. Step 3: Cross multiply
    13,340.57x = 18,408.36 × 7,372.33
  4. Step 4: Simplify right side
    13,340.57x = 135,712,589.85
  5. Step 5: Solve for x
    x = 135,712,589.85/13,340.57
  6. Step 6: Final answer
    x = 10,172.93

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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.