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Finding the Fourth Proportional to 13,231.42, 19,816.71 and 7,375.06

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Solution

The fourth proportional to 13,231.42, 19,816.71 and 7,375.06 is: 11,045.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,231.42 : 19,816.71 = 7,375.06 : x
  2. Step 2: Convert to fraction form
    13,231.42/19,816.71 = 7,375.06/x
  3. Step 3: Cross multiply
    13,231.42x = 19,816.71 × 7,375.06
  4. Step 4: Simplify right side
    13,231.42x = 146,149,425.25
  5. Step 5: Solve for x
    x = 146,149,425.25/13,231.42
  6. Step 6: Final answer
    x = 11,045.63

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1.5x scale

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.