Home / 13,453.76-20,168.80-5,240

Finding the Fourth Proportional to 13,453.76, 20,168.80 and 5,240

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Solution

The fourth proportional to 13,453.76, 20,168.80 and 5,240 is: 7,855.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,453.76 : 20,168.80 = 5,240 : x
  2. Step 2: Convert to fraction form
    13,453.76/20,168.80 = 5,240/x
  3. Step 3: Cross multiply
    13,453.76x = 20,168.80 × 5,240
  4. Step 4: Simplify right side
    13,453.76x = 105,684,512
  5. Step 5: Solve for x
    x = 105,684,512/13,453.76
  6. Step 6: Final answer
    x = 7,855.39

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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.