Home / 20,219.80-30,330.60-6,892.60

Finding the Fourth Proportional to 20,219.80, 30,330.60 and 6,892.60

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Solution

The fourth proportional to 20,219.80, 30,330.60 and 6,892.60 is: 10,339.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,219.80 : 30,330.60 = 6,892.60 : x
  2. Step 2: Convert to fraction form
    20,219.80/30,330.60 = 6,892.60/x
  3. Step 3: Cross multiply
    20,219.80x = 30,330.60 × 6,892.60
  4. Step 4: Simplify right side
    20,219.80x = 209,056,693.56
  5. Step 5: Solve for x
    x = 209,056,693.56/20,219.80
  6. Step 6: Final answer
    x = 10,339.21

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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.