Home / 20,326.66-28,051.97-11,374.09

Finding the Fourth Proportional to 20,326.66, 28,051.97 and 11,374.09

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Solution

The fourth proportional to 20,326.66, 28,051.97 and 11,374.09 is: 15,696.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,326.66 : 28,051.97 = 11,374.09 : x
  2. Step 2: Convert to fraction form
    20,326.66/28,051.97 = 11,374.09/x
  3. Step 3: Cross multiply
    20,326.66x = 28,051.97 × 11,374.09
  4. Step 4: Simplify right side
    20,326.66x = 319,065,568.44
  5. Step 5: Solve for x
    x = 319,065,568.44/20,326.66
  6. Step 6: Final answer
    x = 15,696.90

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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.