Home / 18,072.55-27,112.79-5,421.77

Finding the Fourth Proportional to 18,072.55, 27,112.79 and 5,421.77

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Solution

The fourth proportional to 18,072.55, 27,112.79 and 5,421.77 is: 8,133.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,072.55 : 27,112.79 = 5,421.77 : x
  2. Step 2: Convert to fraction form
    18,072.55/27,112.79 = 5,421.77/x
  3. Step 3: Cross multiply
    18,072.55x = 27,112.79 × 5,421.77
  4. Step 4: Simplify right side
    18,072.55x = 146,999,291.10
  5. Step 5: Solve for x
    x = 146,999,291.10/18,072.55
  6. Step 6: Final answer
    x = 8,133.84

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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.