Home / 20,121.60-27,705.60-16,723.20

Finding the Fourth Proportional to 20,121.60, 27,705.60 and 16,723.20

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Solution

The fourth proportional to 20,121.60, 27,705.60 and 16,723.20 is: 23,026.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.60 : 27,705.60 = 16,723.20 : x
  2. Step 2: Convert to fraction form
    20,121.60/27,705.60 = 16,723.20/x
  3. Step 3: Cross multiply
    20,121.60x = 27,705.60 × 16,723.20
  4. Step 4: Simplify right side
    20,121.60x = 463,326,289.92
  5. Step 5: Solve for x
    x = 463,326,289.92/20,121.60
  6. Step 6: Final answer
    x = 23,026.31

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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.