Home / 13,431.96-20,127.42-5,636.52

Finding the Fourth Proportional to 13,431.96, 20,127.42 and 5,636.52

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Solution

The fourth proportional to 13,431.96, 20,127.42 and 5,636.52 is: 8,446.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431.96 : 20,127.42 = 5,636.52 : x
  2. Step 2: Convert to fraction form
    13,431.96/20,127.42 = 5,636.52/x
  3. Step 3: Cross multiply
    13,431.96x = 20,127.42 × 5,636.52
  4. Step 4: Simplify right side
    13,431.96x = 113,448,605.38
  5. Step 5: Solve for x
    x = 113,448,605.38/13,431.96
  6. Step 6: Final answer
    x = 8,446.17

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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.