Home / 20,203.96-27,873.60-12,647.20

Finding the Fourth Proportional to 20,203.96, 27,873.60 and 12,647.20

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Solution

The fourth proportional to 20,203.96, 27,873.60 and 12,647.20 is: 17,448.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,203.96 : 27,873.60 = 12,647.20 : x
  2. Step 2: Convert to fraction form
    20,203.96/27,873.60 = 12,647.20/x
  3. Step 3: Cross multiply
    20,203.96x = 27,873.60 × 12,647.20
  4. Step 4: Simplify right side
    20,203.96x = 352,522,993.92
  5. Step 5: Solve for x
    x = 352,522,993.92/20,203.96
  6. Step 6: Final answer
    x = 17,448.21

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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.