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Finding the Fourth Proportional to 12,793.80, 19,165.59 and 11,400.60

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Solution

The fourth proportional to 12,793.80, 19,165.59 and 11,400.60 is: 17,078.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,793.80 : 19,165.59 = 11,400.60 : x
  2. Step 2: Convert to fraction form
    12,793.80/19,165.59 = 11,400.60/x
  3. Step 3: Cross multiply
    12,793.80x = 19,165.59 × 11,400.60
  4. Step 4: Simplify right side
    12,793.80x = 218,499,225.35
  5. Step 5: Solve for x
    x = 218,499,225.35/12,793.80
  6. Step 6: Final answer
    x = 17,078.52

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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.