Home / 20,420.46-30,630.60-7,273.32

Finding the Fourth Proportional to 20,420.46, 30,630.60 and 7,273.32

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Solution

The fourth proportional to 20,420.46, 30,630.60 and 7,273.32 is: 10,909.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,420.46 : 30,630.60 = 7,273.32 : x
  2. Step 2: Convert to fraction form
    20,420.46/30,630.60 = 7,273.32/x
  3. Step 3: Cross multiply
    20,420.46x = 30,630.60 × 7,273.32
  4. Step 4: Simplify right side
    20,420.46x = 222,786,155.59
  5. Step 5: Solve for x
    x = 222,786,155.59/20,420.46
  6. Step 6: Final answer
    x = 10,909.95

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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.