Home / 21,069.08-31,580.94-11,198.42

Finding the Fourth Proportional to 21,069.08, 31,580.94 and 11,198.42

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Solution

The fourth proportional to 21,069.08, 31,580.94 and 11,198.42 is: 16,785.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069.08 : 31,580.94 = 11,198.42 : x
  2. Step 2: Convert to fraction form
    21,069.08/31,580.94 = 11,198.42/x
  3. Step 3: Cross multiply
    21,069.08x = 31,580.94 × 11,198.42
  4. Step 4: Simplify right side
    21,069.08x = 353,656,630.11
  5. Step 5: Solve for x
    x = 353,656,630.11/21,069.08
  6. Step 6: Final answer
    x = 16,785.58

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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.