Home / 12,579.88-18,869.80-3,345.88

Finding the Fourth Proportional to 12,579.88, 18,869.80 and 3,345.88

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Solution

The fourth proportional to 12,579.88, 18,869.80 and 3,345.88 is: 5,018.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.88 : 18,869.80 = 3,345.88 : x
  2. Step 2: Convert to fraction form
    12,579.88/18,869.80 = 3,345.88/x
  3. Step 3: Cross multiply
    12,579.88x = 18,869.80 × 3,345.88
  4. Step 4: Simplify right side
    12,579.88x = 63,136,086.42
  5. Step 5: Solve for x
    x = 63,136,086.42/12,579.88
  6. Step 6: Final answer
    x = 5,018.81

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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.