Home / 11,219.92-16,831.68-3,428.08

Finding the Fourth Proportional to 11,219.92, 16,831.68 and 3,428.08

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Solution

The fourth proportional to 11,219.92, 16,831.68 and 3,428.08 is: 5,142.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,219.92 : 16,831.68 = 3,428.08 : x
  2. Step 2: Convert to fraction form
    11,219.92/16,831.68 = 3,428.08/x
  3. Step 3: Cross multiply
    11,219.92x = 16,831.68 × 3,428.08
  4. Step 4: Simplify right side
    11,219.92x = 57,700,345.57
  5. Step 5: Solve for x
    x = 57,700,345.57/11,219.92
  6. Step 6: Final answer
    x = 5,142.67

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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.