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Finding the Fourth Proportional to 30,329.44, 45,500.32 and 12,799.20

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Solution

The fourth proportional to 30,329.44, 45,500.32 and 12,799.20 is: 19,201.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,329.44 : 45,500.32 = 12,799.20 : x
  2. Step 2: Convert to fraction form
    30,329.44/45,500.32 = 12,799.20/x
  3. Step 3: Cross multiply
    30,329.44x = 45,500.32 × 12,799.20
  4. Step 4: Simplify right side
    30,329.44x = 582,367,695.74
  5. Step 5: Solve for x
    x = 582,367,695.74/30,329.44
  6. Step 6: Final answer
    x = 19,201.40

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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.