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Finding the Fourth Proportional to 20,092.80, 30,133.80 and 8,403.60

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Solution

The fourth proportional to 20,092.80, 30,133.80 and 8,403.60 is: 12,603.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,092.80 : 30,133.80 = 8,403.60 : x
  2. Step 2: Convert to fraction form
    20,092.80/30,133.80 = 8,403.60/x
  3. Step 3: Cross multiply
    20,092.80x = 30,133.80 × 8,403.60
  4. Step 4: Simplify right side
    20,092.80x = 253,232,401.68
  5. Step 5: Solve for x
    x = 253,232,401.68/20,092.80
  6. Step 6: Final answer
    x = 12,603.14

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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.