Home / 21,069.08-31,580.94-11,198.44

Finding the Fourth Proportional to 21,069.08, 31,580.94 and 11,198.44

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Solution

The fourth proportional to 21,069.08, 31,580.94 and 11,198.44 is: 16,785.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069.08 : 31,580.94 = 11,198.44 : x
  2. Step 2: Convert to fraction form
    21,069.08/31,580.94 = 11,198.44/x
  3. Step 3: Cross multiply
    21,069.08x = 31,580.94 × 11,198.44
  4. Step 4: Simplify right side
    21,069.08x = 353,657,261.73
  5. Step 5: Solve for x
    x = 353,657,261.73/21,069.08
  6. Step 6: Final answer
    x = 16,785.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.