Home / 20,579.57-30,869.13-4,997.20

Finding the Fourth Proportional to 20,579.57, 30,869.13 and 4,997.20

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Solution

The fourth proportional to 20,579.57, 30,869.13 and 4,997.20 is: 7,495.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,579.57 : 30,869.13 = 4,997.20 : x
  2. Step 2: Convert to fraction form
    20,579.57/30,869.13 = 4,997.20/x
  3. Step 3: Cross multiply
    20,579.57x = 30,869.13 × 4,997.20
  4. Step 4: Simplify right side
    20,579.57x = 154,259,216.44
  5. Step 5: Solve for x
    x = 154,259,216.44/20,579.57
  6. Step 6: Final answer
    x = 7,495.75

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1.5x scale

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.