Home / 28,781.06-43,183.53-13,780.62

Finding the Fourth Proportional to 28,781.06, 43,183.53 and 13,780.62

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Solution

The fourth proportional to 28,781.06, 43,183.53 and 13,780.62 is: 20,676.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,781.06 : 43,183.53 = 13,780.62 : x
  2. Step 2: Convert to fraction form
    28,781.06/43,183.53 = 13,780.62/x
  3. Step 3: Cross multiply
    28,781.06x = 43,183.53 × 13,780.62
  4. Step 4: Simplify right side
    28,781.06x = 595,095,817.19
  5. Step 5: Solve for x
    x = 595,095,817.19/28,781.06
  6. Step 6: Final answer
    x = 20,676.65

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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.