Home / 13,722.12-20,586.48-3,861.36

Finding the Fourth Proportional to 13,722.12, 20,586.48 and 3,861.36

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Solution

The fourth proportional to 13,722.12, 20,586.48 and 3,861.36 is: 5,792.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.12 : 20,586.48 = 3,861.36 : x
  2. Step 2: Convert to fraction form
    13,722.12/20,586.48 = 3,861.36/x
  3. Step 3: Cross multiply
    13,722.12x = 20,586.48 × 3,861.36
  4. Step 4: Simplify right side
    13,722.12x = 79,491,810.41
  5. Step 5: Solve for x
    x = 79,491,810.41/13,722.12
  6. Step 6: Final answer
    x = 5,792.97

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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.