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Finding the Fourth Proportional to 19,980.60, 30,003.30 and 11,232.60

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Solution

The fourth proportional to 19,980.60, 30,003.30 and 11,232.60 is: 16,867.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,980.60 : 30,003.30 = 11,232.60 : x
  2. Step 2: Convert to fraction form
    19,980.60/30,003.30 = 11,232.60/x
  3. Step 3: Cross multiply
    19,980.60x = 30,003.30 × 11,232.60
  4. Step 4: Simplify right side
    19,980.60x = 337,015,067.58
  5. Step 5: Solve for x
    x = 337,015,067.58/19,980.60
  6. Step 6: Final answer
    x = 16,867.11

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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.