Home / 21,794.48-30,078.60-12,844.87

Finding the Fourth Proportional to 21,794.48, 30,078.60 and 12,844.87

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Solution

The fourth proportional to 21,794.48, 30,078.60 and 12,844.87 is: 17,727.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,794.48 : 30,078.60 = 12,844.87 : x
  2. Step 2: Convert to fraction form
    21,794.48/30,078.60 = 12,844.87/x
  3. Step 3: Cross multiply
    21,794.48x = 30,078.60 × 12,844.87
  4. Step 4: Simplify right side
    21,794.48x = 386,355,550.15
  5. Step 5: Solve for x
    x = 386,355,550.15/21,794.48
  6. Step 6: Final answer
    x = 17,727.22

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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.