Home / 20,098.60-30,147.96-8,403.62

Finding the Fourth Proportional to 20,098.60, 30,147.96 and 8,403.62

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Solution

The fourth proportional to 20,098.60, 30,147.96 and 8,403.62 is: 12,605.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,098.60 : 30,147.96 = 8,403.62 : x
  2. Step 2: Convert to fraction form
    20,098.60/30,147.96 = 8,403.62/x
  3. Step 3: Cross multiply
    20,098.60x = 30,147.96 × 8,403.62
  4. Step 4: Simplify right side
    20,098.60x = 253,351,880.39
  5. Step 5: Solve for x
    x = 253,351,880.39/20,098.60
  6. Step 6: Final answer
    x = 12,605.45

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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.