Home / 20,673.17-28,528.37-11,721.49

Finding the Fourth Proportional to 20,673.17, 28,528.37 and 11,721.49

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Solution

The fourth proportional to 20,673.17, 28,528.37 and 11,721.49 is: 16,175.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,673.17 : 28,528.37 = 11,721.49 : x
  2. Step 2: Convert to fraction form
    20,673.17/28,528.37 = 11,721.49/x
  3. Step 3: Cross multiply
    20,673.17x = 28,528.37 × 11,721.49
  4. Step 4: Simplify right side
    20,673.17x = 334,394,945.06
  5. Step 5: Solve for x
    x = 334,394,945.06/20,673.17
  6. Step 6: Final answer
    x = 16,175.31

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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.