Home / 20,069.09-27,682.81-12,908.33

Finding the Fourth Proportional to 20,069.09, 27,682.81 and 12,908.33

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Solution

The fourth proportional to 20,069.09, 27,682.81 and 12,908.33 is: 17,805.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,069.09 : 27,682.81 = 12,908.33 : x
  2. Step 2: Convert to fraction form
    20,069.09/27,682.81 = 12,908.33/x
  3. Step 3: Cross multiply
    20,069.09x = 27,682.81 × 12,908.33
  4. Step 4: Simplify right side
    20,069.09x = 357,338,829.25
  5. Step 5: Solve for x
    x = 357,338,829.25/20,069.09
  6. Step 6: Final answer
    x = 17,805.44

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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.