Home / 20,132.36-30,183.95-10,143.26

Finding the Fourth Proportional to 20,132.36, 30,183.95 and 10,143.26

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Solution

The fourth proportional to 20,132.36, 30,183.95 and 10,143.26 is: 15,207.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,132.36 : 30,183.95 = 10,143.26 : x
  2. Step 2: Convert to fraction form
    20,132.36/30,183.95 = 10,143.26/x
  3. Step 3: Cross multiply
    20,132.36x = 30,183.95 × 10,143.26
  4. Step 4: Simplify right side
    20,132.36x = 306,163,652.68
  5. Step 5: Solve for x
    x = 306,163,652.68/20,132.36
  6. Step 6: Final answer
    x = 15,207.54

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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.