Home / 20,072.52-27,701.12-11,121

Finding the Fourth Proportional to 20,072.52, 27,701.12 and 11,121

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Solution

The fourth proportional to 20,072.52, 27,701.12 and 11,121 is: 15,347.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.52 : 27,701.12 = 11,121 : x
  2. Step 2: Convert to fraction form
    20,072.52/27,701.12 = 11,121/x
  3. Step 3: Cross multiply
    20,072.52x = 27,701.12 × 11,121
  4. Step 4: Simplify right side
    20,072.52x = 308,064,155.52
  5. Step 5: Solve for x
    x = 308,064,155.52/20,072.52
  6. Step 6: Final answer
    x = 15,347.56

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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.