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Finding the Fourth Proportional to 34,940.72, 52,393.80 and 12,753.20

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Solution

The fourth proportional to 34,940.72, 52,393.80 and 12,753.20 is: 19,123.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,940.72 : 52,393.80 = 12,753.20 : x
  2. Step 2: Convert to fraction form
    34,940.72/52,393.80 = 12,753.20/x
  3. Step 3: Cross multiply
    34,940.72x = 52,393.80 × 12,753.20
  4. Step 4: Simplify right side
    34,940.72x = 668,188,610.16
  5. Step 5: Solve for x
    x = 668,188,610.16/34,940.72
  6. Step 6: Final answer
    x = 19,123.49

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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.