Home / 13,996.14-20,987.54-5,105.18

Finding the Fourth Proportional to 13,996.14, 20,987.54 and 5,105.18

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Solution

The fourth proportional to 13,996.14, 20,987.54 and 5,105.18 is: 7,655.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,996.14 : 20,987.54 = 5,105.18 : x
  2. Step 2: Convert to fraction form
    13,996.14/20,987.54 = 5,105.18/x
  3. Step 3: Cross multiply
    13,996.14x = 20,987.54 × 5,105.18
  4. Step 4: Simplify right side
    13,996.14x = 107,145,169.46
  5. Step 5: Solve for x
    x = 107,145,169.46/13,996.14
  6. Step 6: Final answer
    x = 7,655.34

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Similar ratio
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1.5x scale

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.