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Finding the Fourth Proportional to 11,799.40, 17,699.10 and 8,458.60

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Solution

The fourth proportional to 11,799.40, 17,699.10 and 8,458.60 is: 12,687.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,799.40 : 17,699.10 = 8,458.60 : x
  2. Step 2: Convert to fraction form
    11,799.40/17,699.10 = 8,458.60/x
  3. Step 3: Cross multiply
    11,799.40x = 17,699.10 × 8,458.60
  4. Step 4: Simplify right side
    11,799.40x = 149,709,607.26
  5. Step 5: Solve for x
    x = 149,709,607.26/11,799.40
  6. Step 6: Final answer
    x = 12,687.90

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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.