Home / 13,172.94-18,178.68-7,204.62

Finding the Fourth Proportional to 13,172.94, 18,178.68 and 7,204.62

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Solution

The fourth proportional to 13,172.94, 18,178.68 and 7,204.62 is: 9,942.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.94 : 18,178.68 = 7,204.62 : x
  2. Step 2: Convert to fraction form
    13,172.94/18,178.68 = 7,204.62/x
  3. Step 3: Cross multiply
    13,172.94x = 18,178.68 × 7,204.62
  4. Step 4: Simplify right side
    13,172.94x = 130,970,481.50
  5. Step 5: Solve for x
    x = 130,970,481.50/13,172.94
  6. Step 6: Final answer
    x = 9,942.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.