Home / 39,979.48-59,958.75-11,891.98

Finding the Fourth Proportional to 39,979.48, 59,958.75 and 11,891.98

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Solution

The fourth proportional to 39,979.48, 59,958.75 and 11,891.98 is: 17,834.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,979.48 : 59,958.75 = 11,891.98 : x
  2. Step 2: Convert to fraction form
    39,979.48/59,958.75 = 11,891.98/x
  3. Step 3: Cross multiply
    39,979.48x = 59,958.75 × 11,891.98
  4. Step 4: Simplify right side
    39,979.48x = 713,028,255.83
  5. Step 5: Solve for x
    x = 713,028,255.83/39,979.48
  6. Step 6: Final answer
    x = 17,834.86

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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.