Home / 20,139.30-30,209.26-6,099.47

Finding the Fourth Proportional to 20,139.30, 30,209.26 and 6,099.47

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Solution

The fourth proportional to 20,139.30, 30,209.26 and 6,099.47 is: 9,149.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139.30 : 30,209.26 = 6,099.47 : x
  2. Step 2: Convert to fraction form
    20,139.30/30,209.26 = 6,099.47/x
  3. Step 3: Cross multiply
    20,139.30x = 30,209.26 × 6,099.47
  4. Step 4: Simplify right side
    20,139.30x = 184,260,324.05
  5. Step 5: Solve for x
    x = 184,260,324.05/20,139.30
  6. Step 6: Final answer
    x = 9,149.29

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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.