Home / 13,219.90-18,233.94-8,499.67

Finding the Fourth Proportional to 13,219.90, 18,233.94 and 8,499.67

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Solution

The fourth proportional to 13,219.90, 18,233.94 and 8,499.67 is: 11,723.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.90 : 18,233.94 = 8,499.67 : x
  2. Step 2: Convert to fraction form
    13,219.90/18,233.94 = 8,499.67/x
  3. Step 3: Cross multiply
    13,219.90x = 18,233.94 × 8,499.67
  4. Step 4: Simplify right side
    13,219.90x = 154,982,472.80
  5. Step 5: Solve for x
    x = 154,982,472.80/13,219.90
  6. Step 6: Final answer
    x = 11,723.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.