Home / 39,409.57-59,103.40-10,939.97

Finding the Fourth Proportional to 39,409.57, 59,103.40 and 10,939.97

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Solution

The fourth proportional to 39,409.57, 59,103.40 and 10,939.97 is: 16,406.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,409.57 : 59,103.40 = 10,939.97 : x
  2. Step 2: Convert to fraction form
    39,409.57/59,103.40 = 10,939.97/x
  3. Step 3: Cross multiply
    39,409.57x = 59,103.40 × 10,939.97
  4. Step 4: Simplify right side
    39,409.57x = 646,589,422.90
  5. Step 5: Solve for x
    x = 646,589,422.90/39,409.57
  6. Step 6: Final answer
    x = 16,406.91

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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.