Home / 13,655.64-20,473.12-5,760.56

Finding the Fourth Proportional to 13,655.64, 20,473.12 and 5,760.56

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Solution

The fourth proportional to 13,655.64, 20,473.12 and 5,760.56 is: 8,636.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.64 : 20,473.12 = 5,760.56 : x
  2. Step 2: Convert to fraction form
    13,655.64/20,473.12 = 5,760.56/x
  3. Step 3: Cross multiply
    13,655.64x = 20,473.12 × 5,760.56
  4. Step 4: Simplify right side
    13,655.64x = 117,936,636.15
  5. Step 5: Solve for x
    x = 117,936,636.15/13,655.64
  6. Step 6: Final answer
    x = 8,636.48

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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.