Home / 12,579.29-18,877.59-5,183.75

Finding the Fourth Proportional to 12,579.29, 18,877.59 and 5,183.75

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Solution

The fourth proportional to 12,579.29, 18,877.59 and 5,183.75 is: 7,779.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,579.29 : 18,877.59 = 5,183.75 : x
  2. Step 2: Convert to fraction form
    12,579.29/18,877.59 = 5,183.75/x
  3. Step 3: Cross multiply
    12,579.29x = 18,877.59 × 5,183.75
  4. Step 4: Simplify right side
    12,579.29x = 97,856,707.16
  5. Step 5: Solve for x
    x = 97,856,707.16/12,579.29
  6. Step 6: Final answer
    x = 7,779.19

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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.