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Finding the Fourth Proportional to 18,647.53, 27,971.67 and 6,958.42

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Solution

The fourth proportional to 18,647.53, 27,971.67 and 6,958.42 is: 10,437.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,647.53 : 27,971.67 = 6,958.42 : x
  2. Step 2: Convert to fraction form
    18,647.53/27,971.67 = 6,958.42/x
  3. Step 3: Cross multiply
    18,647.53x = 27,971.67 × 6,958.42
  4. Step 4: Simplify right side
    18,647.53x = 194,638,627.96
  5. Step 5: Solve for x
    x = 194,638,627.96/18,647.53
  6. Step 6: Final answer
    x = 10,437.77

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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.