Home / 13,168.20-18,172.05-7,199.85

Finding the Fourth Proportional to 13,168.20, 18,172.05 and 7,199.85

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Solution

The fourth proportional to 13,168.20, 18,172.05 and 7,199.85 is: 9,935.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,168.20 : 18,172.05 = 7,199.85 : x
  2. Step 2: Convert to fraction form
    13,168.20/18,172.05 = 7,199.85/x
  3. Step 3: Cross multiply
    13,168.20x = 18,172.05 × 7,199.85
  4. Step 4: Simplify right side
    13,168.20x = 130,836,034.19
  5. Step 5: Solve for x
    x = 130,836,034.19/13,168.20
  6. Step 6: Final answer
    x = 9,935.76

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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.