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Finding the Fourth Proportional to 12,505.69, 18,755.74 and 3,739.47

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Solution

The fourth proportional to 12,505.69, 18,755.74 and 3,739.47 is: 5,608.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,505.69 : 18,755.74 = 3,739.47 : x
  2. Step 2: Convert to fraction form
    12,505.69/18,755.74 = 3,739.47/x
  3. Step 3: Cross multiply
    12,505.69x = 18,755.74 × 3,739.47
  4. Step 4: Simplify right side
    12,505.69x = 70,136,527.06
  5. Step 5: Solve for x
    x = 70,136,527.06/12,505.69
  6. Step 6: Final answer
    x = 5,608.37

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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.