Home / 38,958.08-58,400.12-12,644.42

Finding the Fourth Proportional to 38,958.08, 58,400.12 and 12,644.42

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Solution

The fourth proportional to 38,958.08, 58,400.12 and 12,644.42 is: 18,954.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,958.08 : 58,400.12 = 12,644.42 : x
  2. Step 2: Convert to fraction form
    38,958.08/58,400.12 = 12,644.42/x
  3. Step 3: Cross multiply
    38,958.08x = 58,400.12 × 12,644.42
  4. Step 4: Simplify right side
    38,958.08x = 738,435,353.33
  5. Step 5: Solve for x
    x = 738,435,353.33/38,958.08
  6. Step 6: Final answer
    x = 18,954.62

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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.