Home / 13,655.39-20,491.04-5,757.42

Finding the Fourth Proportional to 13,655.39, 20,491.04 and 5,757.42

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Solution

The fourth proportional to 13,655.39, 20,491.04 and 5,757.42 is: 8,639.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.39 : 20,491.04 = 5,757.42 : x
  2. Step 2: Convert to fraction form
    13,655.39/20,491.04 = 5,757.42/x
  3. Step 3: Cross multiply
    13,655.39x = 20,491.04 × 5,757.42
  4. Step 4: Simplify right side
    13,655.39x = 117,975,537.91
  5. Step 5: Solve for x
    x = 117,975,537.91/13,655.39
  6. Step 6: Final answer
    x = 8,639.49

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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.