Home / 13,715.92-20,586.64-5,401.68

Finding the Fourth Proportional to 13,715.92, 20,586.64 and 5,401.68

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Solution

The fourth proportional to 13,715.92, 20,586.64 and 5,401.68 is: 8,107.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,715.92 : 20,586.64 = 5,401.68 : x
  2. Step 2: Convert to fraction form
    13,715.92/20,586.64 = 5,401.68/x
  3. Step 3: Cross multiply
    13,715.92x = 20,586.64 × 5,401.68
  4. Step 4: Simplify right side
    13,715.92x = 111,202,441.56
  5. Step 5: Solve for x
    x = 111,202,441.56/13,715.92
  6. Step 6: Final answer
    x = 8,107.55

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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.