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Finding the Fourth Proportional to 15,200.67, 20,974.36 and 8,486.04

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Solution

The fourth proportional to 15,200.67, 20,974.36 and 8,486.04 is: 11,709.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,200.67 : 20,974.36 = 8,486.04 : x
  2. Step 2: Convert to fraction form
    15,200.67/20,974.36 = 8,486.04/x
  3. Step 3: Cross multiply
    15,200.67x = 20,974.36 × 8,486.04
  4. Step 4: Simplify right side
    15,200.67x = 177,989,257.93
  5. Step 5: Solve for x
    x = 177,989,257.93/15,200.67
  6. Step 6: Final answer
    x = 11,709.30

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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.