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Finding the Fourth Proportional to 13,740.51, 20,614.01 and 10,939.94

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Solution

The fourth proportional to 13,740.51, 20,614.01 and 10,939.94 is: 16,412.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,740.51 : 20,614.01 = 10,939.94 : x
  2. Step 2: Convert to fraction form
    13,740.51/20,614.01 = 10,939.94/x
  3. Step 3: Cross multiply
    13,740.51x = 20,614.01 × 10,939.94
  4. Step 4: Simplify right side
    13,740.51x = 225,515,874.79
  5. Step 5: Solve for x
    x = 225,515,874.79/13,740.51
  6. Step 6: Final answer
    x = 16,412.48

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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.