Home / 12,579.04-18,864.20-3,811.60

Finding the Fourth Proportional to 12,579.04, 18,864.20 and 3,811.60

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Solution

The fourth proportional to 12,579.04, 18,864.20 and 3,811.60 is: 5,716.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.04 : 18,864.20 = 3,811.60 : x
  2. Step 2: Convert to fraction form
    12,579.04/18,864.20 = 3,811.60/x
  3. Step 3: Cross multiply
    12,579.04x = 18,864.20 × 3,811.60
  4. Step 4: Simplify right side
    12,579.04x = 71,902,784.72
  5. Step 5: Solve for x
    x = 71,902,784.72/12,579.04
  6. Step 6: Final answer
    x = 5,716.08

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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.