Home / 12,388.20-18,583.38-4,066.08

Finding the Fourth Proportional to 12,388.20, 18,583.38 and 4,066.08

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Solution

The fourth proportional to 12,388.20, 18,583.38 and 4,066.08 is: 6,099.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,388.20 : 18,583.38 = 4,066.08 : x
  2. Step 2: Convert to fraction form
    12,388.20/18,583.38 = 4,066.08/x
  3. Step 3: Cross multiply
    12,388.20x = 18,583.38 × 4,066.08
  4. Step 4: Simplify right side
    12,388.20x = 75,561,509.75
  5. Step 5: Solve for x
    x = 75,561,509.75/12,388.20
  6. Step 6: Final answer
    x = 6,099.47

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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.