Home / 12,579.91-18,872.49-5,184.30

Finding the Fourth Proportional to 12,579.91, 18,872.49 and 5,184.30

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Solution

The fourth proportional to 12,579.91, 18,872.49 and 5,184.30 is: 7,777.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.91 : 18,872.49 = 5,184.30 : x
  2. Step 2: Convert to fraction form
    12,579.91/18,872.49 = 5,184.30/x
  3. Step 3: Cross multiply
    12,579.91x = 18,872.49 × 5,184.30
  4. Step 4: Simplify right side
    12,579.91x = 97,840,740.12
  5. Step 5: Solve for x
    x = 97,840,740.12/12,579.91
  6. Step 6: Final answer
    x = 7,777.54

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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.