Home / 20,081.93-27,716.99-12,809.34

Finding the Fourth Proportional to 20,081.93, 27,716.99 and 12,809.34

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Solution

The fourth proportional to 20,081.93, 27,716.99 and 12,809.34 is: 17,679.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,081.93 : 27,716.99 = 12,809.34 : x
  2. Step 2: Convert to fraction form
    20,081.93/27,716.99 = 12,809.34/x
  3. Step 3: Cross multiply
    20,081.93x = 27,716.99 × 12,809.34
  4. Step 4: Simplify right side
    20,081.93x = 355,036,284.64
  5. Step 5: Solve for x
    x = 355,036,284.64/20,081.93
  6. Step 6: Final answer
    x = 17,679.40

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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.