Home / 39,988.26-59,990.49-11,908.80

Finding the Fourth Proportional to 39,988.26, 59,990.49 and 11,908.80

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Solution

The fourth proportional to 39,988.26, 59,990.49 and 11,908.80 is: 17,865.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,988.26 : 59,990.49 = 11,908.80 : x
  2. Step 2: Convert to fraction form
    39,988.26/59,990.49 = 11,908.80/x
  3. Step 3: Cross multiply
    39,988.26x = 59,990.49 × 11,908.80
  4. Step 4: Simplify right side
    39,988.26x = 714,414,747.31
  5. Step 5: Solve for x
    x = 714,414,747.31/39,988.26
  6. Step 6: Final answer
    x = 17,865.61

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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.