Home / 20,982.08-31,473.12-5,399.72

Finding the Fourth Proportional to 20,982.08, 31,473.12 and 5,399.72

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Solution

The fourth proportional to 20,982.08, 31,473.12 and 5,399.72 is: 8,099.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,982.08 : 31,473.12 = 5,399.72 : x
  2. Step 2: Convert to fraction form
    20,982.08/31,473.12 = 5,399.72/x
  3. Step 3: Cross multiply
    20,982.08x = 31,473.12 × 5,399.72
  4. Step 4: Simplify right side
    20,982.08x = 169,946,035.53
  5. Step 5: Solve for x
    x = 169,946,035.53/20,982.08
  6. Step 6: Final answer
    x = 8,099.58

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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.