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Finding the Fourth Proportional to 12,603.38, 18,893.37 and 5,579.65

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Solution

The fourth proportional to 12,603.38, 18,893.37 and 5,579.65 is: 8,364.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,603.38 : 18,893.37 = 5,579.65 : x
  2. Step 2: Convert to fraction form
    12,603.38/18,893.37 = 5,579.65/x
  3. Step 3: Cross multiply
    12,603.38x = 18,893.37 × 5,579.65
  4. Step 4: Simplify right side
    12,603.38x = 105,418,344.69
  5. Step 5: Solve for x
    x = 105,418,344.69/12,603.38
  6. Step 6: Final answer
    x = 8,364.29

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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.