Home / 39,174.60-58,755.81-12,879.15

Finding the Fourth Proportional to 39,174.60, 58,755.81 and 12,879.15

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Solution

The fourth proportional to 39,174.60, 58,755.81 and 12,879.15 is: 19,316.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,174.60 : 58,755.81 = 12,879.15 : x
  2. Step 2: Convert to fraction form
    39,174.60/58,755.81 = 12,879.15/x
  3. Step 3: Cross multiply
    39,174.60x = 58,755.81 × 12,879.15
  4. Step 4: Simplify right side
    39,174.60x = 756,724,890.36
  5. Step 5: Solve for x
    x = 756,724,890.36/39,174.60
  6. Step 6: Final answer
    x = 19,316.72

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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.