Home / 20,888.43-28,827.62-11,936.31

Finding the Fourth Proportional to 20,888.43, 28,827.62 and 11,936.31

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Solution

The fourth proportional to 20,888.43, 28,827.62 and 11,936.31 is: 16,473.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,888.43 : 28,827.62 = 11,936.31 : x
  2. Step 2: Convert to fraction form
    20,888.43/28,827.62 = 11,936.31/x
  3. Step 3: Cross multiply
    20,888.43x = 28,827.62 × 11,936.31
  4. Step 4: Simplify right side
    20,888.43x = 344,095,481.58
  5. Step 5: Solve for x
    x = 344,095,481.58/20,888.43
  6. Step 6: Final answer
    x = 16,473.02

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1.5x scale

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.