Home / 15,220.60-20,979.32-10,183.02

Finding the Fourth Proportional to 15,220.60, 20,979.32 and 10,183.02

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Solution

The fourth proportional to 15,220.60, 20,979.32 and 10,183.02 is: 14,035.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,220.60 : 20,979.32 = 10,183.02 : x
  2. Step 2: Convert to fraction form
    15,220.60/20,979.32 = 10,183.02/x
  3. Step 3: Cross multiply
    15,220.60x = 20,979.32 × 10,183.02
  4. Step 4: Simplify right side
    15,220.60x = 213,632,835.15
  5. Step 5: Solve for x
    x = 213,632,835.15/15,220.60
  6. Step 6: Final answer
    x = 14,035.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.