Home / 13,338.24-18,408.55-7,672.85

Finding the Fourth Proportional to 13,338.24, 18,408.55 and 7,672.85

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Solution

The fourth proportional to 13,338.24, 18,408.55 and 7,672.85 is: 10,589.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,338.24 : 18,408.55 = 7,672.85 : x
  2. Step 2: Convert to fraction form
    13,338.24/18,408.55 = 7,672.85/x
  3. Step 3: Cross multiply
    13,338.24x = 18,408.55 × 7,672.85
  4. Step 4: Simplify right side
    13,338.24x = 141,245,950.82
  5. Step 5: Solve for x
    x = 141,245,950.82/13,338.24
  6. Step 6: Final answer
    x = 10,589.55

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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.