Home / 13,239.61-19,862.15-3,879.93

Finding the Fourth Proportional to 13,239.61, 19,862.15 and 3,879.93

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Solution

The fourth proportional to 13,239.61, 19,862.15 and 3,879.93 is: 5,820.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,239.61 : 19,862.15 = 3,879.93 : x
  2. Step 2: Convert to fraction form
    13,239.61/19,862.15 = 3,879.93/x
  3. Step 3: Cross multiply
    13,239.61x = 19,862.15 × 3,879.93
  4. Step 4: Simplify right side
    13,239.61x = 77,063,839.47
  5. Step 5: Solve for x
    x = 77,063,839.47/13,239.61
  6. Step 6: Final answer
    x = 5,820.70

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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.