Home / 12,579.38-18,869.05-3,345.38

Finding the Fourth Proportional to 12,579.38, 18,869.05 and 3,345.38

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Solution

The fourth proportional to 12,579.38, 18,869.05 and 3,345.38 is: 5,018.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.38 : 18,869.05 = 3,345.38 : x
  2. Step 2: Convert to fraction form
    12,579.38/18,869.05 = 3,345.38/x
  3. Step 3: Cross multiply
    12,579.38x = 18,869.05 × 3,345.38
  4. Step 4: Simplify right side
    12,579.38x = 63,124,142.49
  5. Step 5: Solve for x
    x = 63,124,142.49/12,579.38
  6. Step 6: Final answer
    x = 5,018.06

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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.