Home / 13,320.86-19,974.33-3,959.60

Finding the Fourth Proportional to 13,320.86, 19,974.33 and 3,959.60

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Solution

The fourth proportional to 13,320.86, 19,974.33 and 3,959.60 is: 5,937.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,320.86 : 19,974.33 = 3,959.60 : x
  2. Step 2: Convert to fraction form
    13,320.86/19,974.33 = 3,959.60/x
  3. Step 3: Cross multiply
    13,320.86x = 19,974.33 × 3,959.60
  4. Step 4: Simplify right side
    13,320.86x = 79,090,257.20
  5. Step 5: Solve for x
    x = 79,090,257.20/13,320.86
  6. Step 6: Final answer
    x = 5,937.33

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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.