Home / 38,706.53-58,067.96-12,429.72

Finding the Fourth Proportional to 38,706.53, 58,067.96 and 12,429.72

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Solution

The fourth proportional to 38,706.53, 58,067.96 and 12,429.72 is: 18,647.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,706.53 : 58,067.96 = 12,429.72 : x
  2. Step 2: Convert to fraction form
    38,706.53/58,067.96 = 12,429.72/x
  3. Step 3: Cross multiply
    38,706.53x = 58,067.96 × 12,429.72
  4. Step 4: Simplify right side
    38,706.53x = 721,768,421.62
  5. Step 5: Solve for x
    x = 721,768,421.62/38,706.53
  6. Step 6: Final answer
    x = 18,647.20

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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.