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Finding the Fourth Proportional to 18,603.96, 27,903.78 and 6,915.84

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Solution

The fourth proportional to 18,603.96, 27,903.78 and 6,915.84 is: 10,372.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.96 : 27,903.78 = 6,915.84 : x
  2. Step 2: Convert to fraction form
    18,603.96/27,903.78 = 6,915.84/x
  3. Step 3: Cross multiply
    18,603.96x = 27,903.78 × 6,915.84
  4. Step 4: Simplify right side
    18,603.96x = 192,978,077.88
  5. Step 5: Solve for x
    x = 192,978,077.88/18,603.96
  6. Step 6: Final answer
    x = 10,372.96

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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.