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Finding the Fourth Proportional to 32,486.80, 48,730.20 and 20,198.80

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Solution

The fourth proportional to 32,486.80, 48,730.20 and 20,198.80 is: 30,298.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,486.80 : 48,730.20 = 20,198.80 : x
  2. Step 2: Convert to fraction form
    32,486.80/48,730.20 = 20,198.80/x
  3. Step 3: Cross multiply
    32,486.80x = 48,730.20 × 20,198.80
  4. Step 4: Simplify right side
    32,486.80x = 984,291,563.76
  5. Step 5: Solve for x
    x = 984,291,563.76/32,486.80
  6. Step 6: Final answer
    x = 30,298.20

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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.