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Finding the Fourth Proportional to 20,002.20, 30,003.30 and 19,656.60

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Solution

The fourth proportional to 20,002.20, 30,003.30 and 19,656.60 is: 29,484.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,002.20 : 30,003.30 = 19,656.60 : x
  2. Step 2: Convert to fraction form
    20,002.20/30,003.30 = 19,656.60/x
  3. Step 3: Cross multiply
    20,002.20x = 30,003.30 × 19,656.60
  4. Step 4: Simplify right side
    20,002.20x = 589,762,866.78
  5. Step 5: Solve for x
    x = 589,762,866.78/20,002.20
  6. Step 6: Final answer
    x = 29,484.90

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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.