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Finding the Fourth Proportional to 22,808.80, 34,184.40 and 20,216.80

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Solution

The fourth proportional to 22,808.80, 34,184.40 and 20,216.80 is: 30,299.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,808.80 : 34,184.40 = 20,216.80 : x
  2. Step 2: Convert to fraction form
    22,808.80/34,184.40 = 20,216.80/x
  3. Step 3: Cross multiply
    22,808.80x = 34,184.40 × 20,216.80
  4. Step 4: Simplify right side
    22,808.80x = 691,099,177.92
  5. Step 5: Solve for x
    x = 691,099,177.92/22,808.80
  6. Step 6: Final answer
    x = 30,299.67

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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.