Home / 13,172.96-18,179.12-7,204.50

Finding the Fourth Proportional to 13,172.96, 18,179.12 and 7,204.50

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Solution

The fourth proportional to 13,172.96, 18,179.12 and 7,204.50 is: 9,942.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,172.96 : 18,179.12 = 7,204.50 : x
  2. Step 2: Convert to fraction form
    13,172.96/18,179.12 = 7,204.50/x
  3. Step 3: Cross multiply
    13,172.96x = 18,179.12 × 7,204.50
  4. Step 4: Simplify right side
    13,172.96x = 130,971,470.04
  5. Step 5: Solve for x
    x = 130,971,470.04/13,172.96
  6. Step 6: Final answer
    x = 9,942.45

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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.