Home / 20,873.90-28,806-11,442.44

Finding the Fourth Proportional to 20,873.90, 28,806 and 11,442.44

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Solution

The fourth proportional to 20,873.90, 28,806 and 11,442.44 is: 15,790.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,873.90 : 28,806 = 11,442.44 : x
  2. Step 2: Convert to fraction form
    20,873.90/28,806 = 11,442.44/x
  3. Step 3: Cross multiply
    20,873.90x = 28,806 × 11,442.44
  4. Step 4: Simplify right side
    20,873.90x = 329,610,926.64
  5. Step 5: Solve for x
    x = 329,610,926.64/20,873.90
  6. Step 6: Final answer
    x = 15,790.58

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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.