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Finding the Fourth Proportional to 12,262.29, 18,404.99 and 6,423

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Solution

The fourth proportional to 12,262.29, 18,404.99 and 6,423 is: 9,640.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,262.29 : 18,404.99 = 6,423 : x
  2. Step 2: Convert to fraction form
    12,262.29/18,404.99 = 6,423/x
  3. Step 3: Cross multiply
    12,262.29x = 18,404.99 × 6,423
  4. Step 4: Simplify right side
    12,262.29x = 118,215,218.66
  5. Step 5: Solve for x
    x = 118,215,218.66/12,262.29
  6. Step 6: Final answer
    x = 9,640.55

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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.