Home / 13,518.56-20,279.78-4,159.36

Finding the Fourth Proportional to 13,518.56, 20,279.78 and 4,159.36

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Solution

The fourth proportional to 13,518.56, 20,279.78 and 4,159.36 is: 6,239.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,518.56 : 20,279.78 = 4,159.36 : x
  2. Step 2: Convert to fraction form
    13,518.56/20,279.78 = 4,159.36/x
  3. Step 3: Cross multiply
    13,518.56x = 20,279.78 × 4,159.36
  4. Step 4: Simplify right side
    13,518.56x = 84,350,884.94
  5. Step 5: Solve for x
    x = 84,350,884.94/13,518.56
  6. Step 6: Final answer
    x = 6,239.64

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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.