Home / 20,139.18-30,207.42-6,099.60

Finding the Fourth Proportional to 20,139.18, 30,207.42 and 6,099.60

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Solution

The fourth proportional to 20,139.18, 30,207.42 and 6,099.60 is: 9,148.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139.18 : 30,207.42 = 6,099.60 : x
  2. Step 2: Convert to fraction form
    20,139.18/30,207.42 = 6,099.60/x
  3. Step 3: Cross multiply
    20,139.18x = 30,207.42 × 6,099.60
  4. Step 4: Simplify right side
    20,139.18x = 184,253,179.03
  5. Step 5: Solve for x
    x = 184,253,179.03/20,139.18
  6. Step 6: Final answer
    x = 9,148.99

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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.