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Finding the Fourth Proportional to 38,645, 57,950.62 and 13,676.75

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Solution

The fourth proportional to 38,645, 57,950.62 and 13,676.75 is: 20,509.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,645 : 57,950.62 = 13,676.75 : x
  2. Step 2: Convert to fraction form
    38,645/57,950.62 = 13,676.75/x
  3. Step 3: Cross multiply
    38,645x = 57,950.62 × 13,676.75
  4. Step 4: Simplify right side
    38,645x = 792,576,142.09
  5. Step 5: Solve for x
    x = 792,576,142.09/38,645
  6. Step 6: Final answer
    x = 20,509.15

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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.