Home / 13,274.78-19,912.18-5,475.02

Finding the Fourth Proportional to 13,274.78, 19,912.18 and 5,475.02

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Solution

The fourth proportional to 13,274.78, 19,912.18 and 5,475.02 is: 8,212.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,274.78 : 19,912.18 = 5,475.02 : x
  2. Step 2: Convert to fraction form
    13,274.78/19,912.18 = 5,475.02/x
  3. Step 3: Cross multiply
    13,274.78x = 19,912.18 × 5,475.02
  4. Step 4: Simplify right side
    13,274.78x = 109,019,583.74
  5. Step 5: Solve for x
    x = 109,019,583.74/13,274.78
  6. Step 6: Final answer
    x = 8,212.53

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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.