Home / 18,579.12-27,870.12-4,728

Finding the Fourth Proportional to 18,579.12, 27,870.12 and 4,728

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Solution

The fourth proportional to 18,579.12, 27,870.12 and 4,728 is: 7,092.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,579.12 : 27,870.12 = 4,728 : x
  2. Step 2: Convert to fraction form
    18,579.12/27,870.12 = 4,728/x
  3. Step 3: Cross multiply
    18,579.12x = 27,870.12 × 4,728
  4. Step 4: Simplify right side
    18,579.12x = 131,769,927.36
  5. Step 5: Solve for x
    x = 131,769,927.36/18,579.12
  6. Step 6: Final answer
    x = 7,092.37

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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.