Home / 38,579.86-57,878.97-12,284.56

Finding the Fourth Proportional to 38,579.86, 57,878.97 and 12,284.56

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Solution

The fourth proportional to 38,579.86, 57,878.97 and 12,284.56 is: 18,429.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,579.86 : 57,878.97 = 12,284.56 : x
  2. Step 2: Convert to fraction form
    38,579.86/57,878.97 = 12,284.56/x
  3. Step 3: Cross multiply
    38,579.86x = 57,878.97 × 12,284.56
  4. Step 4: Simplify right side
    38,579.86x = 711,017,679.70
  5. Step 5: Solve for x
    x = 711,017,679.70/38,579.86
  6. Step 6: Final answer
    x = 18,429.76

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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.