Home / 13,605.72-20,408.78-3,744.92

Finding the Fourth Proportional to 13,605.72, 20,408.78 and 3,744.92

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Solution

The fourth proportional to 13,605.72, 20,408.78 and 3,744.92 is: 5,617.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,605.72 : 20,408.78 = 3,744.92 : x
  2. Step 2: Convert to fraction form
    13,605.72/20,408.78 = 3,744.92/x
  3. Step 3: Cross multiply
    13,605.72x = 20,408.78 × 3,744.92
  4. Step 4: Simplify right side
    13,605.72x = 76,429,248.40
  5. Step 5: Solve for x
    x = 76,429,248.40/13,605.72
  6. Step 6: Final answer
    x = 5,617.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.