Home / 19,021.39-28,538.17-7,929.25

Finding the Fourth Proportional to 19,021.39, 28,538.17 and 7,929.25

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Solution

The fourth proportional to 19,021.39, 28,538.17 and 7,929.25 is: 11,896.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,021.39 : 28,538.17 = 7,929.25 : x
  2. Step 2: Convert to fraction form
    19,021.39/28,538.17 = 7,929.25/x
  3. Step 3: Cross multiply
    19,021.39x = 28,538.17 × 7,929.25
  4. Step 4: Simplify right side
    19,021.39x = 226,286,193.30
  5. Step 5: Solve for x
    x = 226,286,193.30/19,021.39
  6. Step 6: Final answer
    x = 11,896.41

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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.