Home / 13,682.18-20,561.76-8,136.52

Finding the Fourth Proportional to 13,682.18, 20,561.76 and 8,136.52

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Solution

The fourth proportional to 13,682.18, 20,561.76 and 8,136.52 is: 12,227.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,682.18 : 20,561.76 = 8,136.52 : x
  2. Step 2: Convert to fraction form
    13,682.18/20,561.76 = 8,136.52/x
  3. Step 3: Cross multiply
    13,682.18x = 20,561.76 × 8,136.52
  4. Step 4: Simplify right side
    13,682.18x = 167,301,171.48
  5. Step 5: Solve for x
    x = 167,301,171.48/13,682.18
  6. Step 6: Final answer
    x = 12,227.67

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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.