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Finding the Fourth Proportional to 15,082.62, 20,813.40 and 8,368.54

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Solution

The fourth proportional to 15,082.62, 20,813.40 and 8,368.54 is: 11,548.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,082.62 : 20,813.40 = 8,368.54 : x
  2. Step 2: Convert to fraction form
    15,082.62/20,813.40 = 8,368.54/x
  3. Step 3: Cross multiply
    15,082.62x = 20,813.40 × 8,368.54
  4. Step 4: Simplify right side
    15,082.62x = 174,177,770.44
  5. Step 5: Solve for x
    x = 174,177,770.44/15,082.62
  6. Step 6: Final answer
    x = 11,548.24

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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.