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Finding the Fourth Proportional to 39,676.21, 59,485.15 and 18,914.29

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Solution

The fourth proportional to 39,676.21, 59,485.15 and 18,914.29 is: 28,357.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,676.21 : 59,485.15 = 18,914.29 : x
  2. Step 2: Convert to fraction form
    39,676.21/59,485.15 = 18,914.29/x
  3. Step 3: Cross multiply
    39,676.21x = 59,485.15 × 18,914.29
  4. Step 4: Simplify right side
    39,676.21x = 1,125,119,377.79
  5. Step 5: Solve for x
    x = 1,125,119,377.79/39,676.21
  6. Step 6: Final answer
    x = 28,357.53

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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.