Home / 13,462.92-20,172.36-8,772.12

Finding the Fourth Proportional to 13,462.92, 20,172.36 and 8,772.12

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Solution

The fourth proportional to 13,462.92, 20,172.36 and 8,772.12 is: 13,143.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,462.92 : 20,172.36 = 8,772.12 : x
  2. Step 2: Convert to fraction form
    13,462.92/20,172.36 = 8,772.12/x
  3. Step 3: Cross multiply
    13,462.92x = 20,172.36 × 8,772.12
  4. Step 4: Simplify right side
    13,462.92x = 176,954,362.60
  5. Step 5: Solve for x
    x = 176,954,362.60/13,462.92
  6. Step 6: Final answer
    x = 13,143.83

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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.