Home / 13,456.13-20,194.67-5,142.03

Finding the Fourth Proportional to 13,456.13, 20,194.67 and 5,142.03

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Solution

The fourth proportional to 13,456.13, 20,194.67 and 5,142.03 is: 7,717.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,456.13 : 20,194.67 = 5,142.03 : x
  2. Step 2: Convert to fraction form
    13,456.13/20,194.67 = 5,142.03/x
  3. Step 3: Cross multiply
    13,456.13x = 20,194.67 × 5,142.03
  4. Step 4: Simplify right side
    13,456.13x = 103,841,620.78
  5. Step 5: Solve for x
    x = 103,841,620.78/13,456.13
  6. Step 6: Final answer
    x = 7,717.05

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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.