Home / 20,579.56-30,781.44-17,181.70

Finding the Fourth Proportional to 20,579.56, 30,781.44 and 17,181.70

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Solution

The fourth proportional to 20,579.56, 30,781.44 and 17,181.70 is: 25,699.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.56 : 30,781.44 = 17,181.70 : x
  2. Step 2: Convert to fraction form
    20,579.56/30,781.44 = 17,181.70/x
  3. Step 3: Cross multiply
    20,579.56x = 30,781.44 × 17,181.70
  4. Step 4: Simplify right side
    20,579.56x = 528,877,467.65
  5. Step 5: Solve for x
    x = 528,877,467.65/20,579.56
  6. Step 6: Final answer
    x = 25,699.16

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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.