Home / 19,822.86-29,739.25-13,990.86

Finding the Fourth Proportional to 19,822.86, 29,739.25 and 13,990.86

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Solution

The fourth proportional to 19,822.86, 29,739.25 and 13,990.86 is: 20,989.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,822.86 : 29,739.25 = 13,990.86 : x
  2. Step 2: Convert to fraction form
    19,822.86/29,739.25 = 13,990.86/x
  3. Step 3: Cross multiply
    19,822.86x = 29,739.25 × 13,990.86
  4. Step 4: Simplify right side
    19,822.86x = 416,077,683.26
  5. Step 5: Solve for x
    x = 416,077,683.26/19,822.86
  6. Step 6: Final answer
    x = 20,989.79

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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.