Home / 13,239.54-19,862.04-3,879.86

Finding the Fourth Proportional to 13,239.54, 19,862.04 and 3,879.86

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Solution

The fourth proportional to 13,239.54, 19,862.04 and 3,879.86 is: 5,820.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.54 : 19,862.04 = 3,879.86 : x
  2. Step 2: Convert to fraction form
    13,239.54/19,862.04 = 3,879.86/x
  3. Step 3: Cross multiply
    13,239.54x = 19,862.04 × 3,879.86
  4. Step 4: Simplify right side
    13,239.54x = 77,062,017.34
  5. Step 5: Solve for x
    x = 77,062,017.34/13,239.54
  6. Step 6: Final answer
    x = 5,820.60

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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.