Home / 13,615.24-20,422.80-3,754.60

Finding the Fourth Proportional to 13,615.24, 20,422.80 and 3,754.60

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Solution

The fourth proportional to 13,615.24, 20,422.80 and 3,754.60 is: 5,631.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,615.24 : 20,422.80 = 3,754.60 : x
  2. Step 2: Convert to fraction form
    13,615.24/20,422.80 = 3,754.60/x
  3. Step 3: Cross multiply
    13,615.24x = 20,422.80 × 3,754.60
  4. Step 4: Simplify right side
    13,615.24x = 76,679,444.88
  5. Step 5: Solve for x
    x = 76,679,444.88/13,615.24
  6. Step 6: Final answer
    x = 5,631.88

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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.