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Finding the Fourth Proportional to 15,000.38, 20,696.37 and 8,626.63

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Solution

The fourth proportional to 15,000.38, 20,696.37 and 8,626.63 is: 11,902.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,000.38 : 20,696.37 = 8,626.63 : x
  2. Step 2: Convert to fraction form
    15,000.38/20,696.37 = 8,626.63/x
  3. Step 3: Cross multiply
    15,000.38x = 20,696.37 × 8,626.63
  4. Step 4: Simplify right side
    15,000.38x = 178,539,822.85
  5. Step 5: Solve for x
    x = 178,539,822.85/15,000.38
  6. Step 6: Final answer
    x = 11,902.35

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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.