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Finding the Fourth Proportional to 18,423, 27,638.58 and 6,735.96

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Solution

The fourth proportional to 18,423, 27,638.58 and 6,735.96 is: 10,105.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,423 : 27,638.58 = 6,735.96 : x
  2. Step 2: Convert to fraction form
    18,423/27,638.58 = 6,735.96/x
  3. Step 3: Cross multiply
    18,423x = 27,638.58 × 6,735.96
  4. Step 4: Simplify right side
    18,423x = 186,172,369.34
  5. Step 5: Solve for x
    x = 186,172,369.34/18,423
  6. Step 6: Final answer
    x = 10,105.43

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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.