Home / 13,340.19-18,408.53-7,372.08

Finding the Fourth Proportional to 13,340.19, 18,408.53 and 7,372.08

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Solution

The fourth proportional to 13,340.19, 18,408.53 and 7,372.08 is: 10,172.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,340.19 : 18,408.53 = 7,372.08 : x
  2. Step 2: Convert to fraction form
    13,340.19/18,408.53 = 7,372.08/x
  3. Step 3: Cross multiply
    13,340.19x = 18,408.53 × 7,372.08
  4. Step 4: Simplify right side
    13,340.19x = 135,709,174.27
  5. Step 5: Solve for x
    x = 135,709,174.27/13,340.19
  6. Step 6: Final answer
    x = 10,172.95

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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.