Home / 20,089.81-27,723.81-11,137.31

Finding the Fourth Proportional to 20,089.81, 27,723.81 and 11,137.31

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Solution

The fourth proportional to 20,089.81, 27,723.81 and 11,137.31 is: 15,369.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,089.81 : 27,723.81 = 11,137.31 : x
  2. Step 2: Convert to fraction form
    20,089.81/27,723.81 = 11,137.31/x
  3. Step 3: Cross multiply
    20,089.81x = 27,723.81 × 11,137.31
  4. Step 4: Simplify right side
    20,089.81x = 308,768,666.35
  5. Step 5: Solve for x
    x = 308,768,666.35/20,089.81
  6. Step 6: Final answer
    x = 15,369.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.