Home / 43,420-65,129.28-13,837.44

Finding the Fourth Proportional to 43,420, 65,129.28 and 13,837.44

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Solution

The fourth proportional to 43,420, 65,129.28 and 13,837.44 is: 20,755.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,420 : 65,129.28 = 13,837.44 : x
  2. Step 2: Convert to fraction form
    43,420/65,129.28 = 13,837.44/x
  3. Step 3: Cross multiply
    43,420x = 65,129.28 × 13,837.44
  4. Step 4: Simplify right side
    43,420x = 901,222,504.24
  5. Step 5: Solve for x
    x = 901,222,504.24/43,420
  6. Step 6: Final answer
    x = 20,755.93

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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.