Home / 20,804.25-28,709.88-11,372.82

Finding the Fourth Proportional to 20,804.25, 28,709.88 and 11,372.82

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Solution

The fourth proportional to 20,804.25, 28,709.88 and 11,372.82 is: 15,694.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.25 : 28,709.88 = 11,372.82 : x
  2. Step 2: Convert to fraction form
    20,804.25/28,709.88 = 11,372.82/x
  3. Step 3: Cross multiply
    20,804.25x = 28,709.88 × 11,372.82
  4. Step 4: Simplify right side
    20,804.25x = 326,512,297.46
  5. Step 5: Solve for x
    x = 326,512,297.46/20,804.25
  6. Step 6: Final answer
    x = 15,694.50

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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.