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Finding the Fourth Proportional to 12,039.89, 18,043.44 and 5,799.45

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Solution

The fourth proportional to 12,039.89, 18,043.44 and 5,799.45 is: 8,691.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,039.89 : 18,043.44 = 5,799.45 : x
  2. Step 2: Convert to fraction form
    12,039.89/18,043.44 = 5,799.45/x
  3. Step 3: Cross multiply
    12,039.89x = 18,043.44 × 5,799.45
  4. Step 4: Simplify right side
    12,039.89x = 104,641,999.11
  5. Step 5: Solve for x
    x = 104,641,999.11/12,039.89
  6. Step 6: Final answer
    x = 8,691.27

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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.