Home / 20,874.30-28,806.32-11,442.84

Finding the Fourth Proportional to 20,874.30, 28,806.32 and 11,442.84

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Solution

The fourth proportional to 20,874.30, 28,806.32 and 11,442.84 is: 15,791.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,874.30 : 28,806.32 = 11,442.84 : x
  2. Step 2: Convert to fraction form
    20,874.30/28,806.32 = 11,442.84/x
  3. Step 3: Cross multiply
    20,874.30x = 28,806.32 × 11,442.84
  4. Step 4: Simplify right side
    20,874.30x = 329,626,110.75
  5. Step 5: Solve for x
    x = 329,626,110.75/20,874.30
  6. Step 6: Final answer
    x = 15,791.00

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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.