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Finding the Fourth Proportional to 12,597.40, 18,879.90 and 11,204.20

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Solution

The fourth proportional to 12,597.40, 18,879.90 and 11,204.20 is: 16,791.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,597.40 : 18,879.90 = 11,204.20 : x
  2. Step 2: Convert to fraction form
    12,597.40/18,879.90 = 11,204.20/x
  3. Step 3: Cross multiply
    12,597.40x = 18,879.90 × 11,204.20
  4. Step 4: Simplify right side
    12,597.40x = 211,534,175.58
  5. Step 5: Solve for x
    x = 211,534,175.58/12,597.40
  6. Step 6: Final answer
    x = 16,791.89

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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.