Home / 20,296.20-30,449.10-6,445.20

Finding the Fourth Proportional to 20,296.20, 30,449.10 and 6,445.20

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Solution

The fourth proportional to 20,296.20, 30,449.10 and 6,445.20 is: 9,669.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,296.20 : 30,449.10 = 6,445.20 : x
  2. Step 2: Convert to fraction form
    20,296.20/30,449.10 = 6,445.20/x
  3. Step 3: Cross multiply
    20,296.20x = 30,449.10 × 6,445.20
  4. Step 4: Simplify right side
    20,296.20x = 196,250,539.32
  5. Step 5: Solve for x
    x = 196,250,539.32/20,296.20
  6. Step 6: Final answer
    x = 9,669.32

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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.