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Finding the Fourth Proportional to 11,388.40, 17,082.60 and 10,902.40

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Solution

The fourth proportional to 11,388.40, 17,082.60 and 10,902.40 is: 16,353.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,388.40 : 17,082.60 = 10,902.40 : x
  2. Step 2: Convert to fraction form
    11,388.40/17,082.60 = 10,902.40/x
  3. Step 3: Cross multiply
    11,388.40x = 17,082.60 × 10,902.40
  4. Step 4: Simplify right side
    11,388.40x = 186,241,338.24
  5. Step 5: Solve for x
    x = 186,241,338.24/11,388.40
  6. Step 6: Final answer
    x = 16,353.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.