Home / 38,448.10-57,579.81-19,678.78

Finding the Fourth Proportional to 38,448.10, 57,579.81 and 19,678.78

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Solution

The fourth proportional to 38,448.10, 57,579.81 and 19,678.78 is: 29,470.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,448.10 : 57,579.81 = 19,678.78 : x
  2. Step 2: Convert to fraction form
    38,448.10/57,579.81 = 19,678.78/x
  3. Step 3: Cross multiply
    38,448.10x = 57,579.81 × 19,678.78
  4. Step 4: Simplify right side
    38,448.10x = 1,133,100,413.43
  5. Step 5: Solve for x
    x = 1,133,100,413.43/38,448.10
  6. Step 6: Final answer
    x = 29,470.91

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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.