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Finding the Fourth Proportional to 19,230.80, 28,836.60 and 8,830.80

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Solution

The fourth proportional to 19,230.80, 28,836.60 and 8,830.80 is: 13,241.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,230.80 : 28,836.60 = 8,830.80 : x
  2. Step 2: Convert to fraction form
    19,230.80/28,836.60 = 8,830.80/x
  3. Step 3: Cross multiply
    19,230.80x = 28,836.60 × 8,830.80
  4. Step 4: Simplify right side
    19,230.80x = 254,650,247.28
  5. Step 5: Solve for x
    x = 254,650,247.28/19,230.80
  6. Step 6: Final answer
    x = 13,241.79

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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.