Home / 19,976.09-27,555.12-12,906.68

Finding the Fourth Proportional to 19,976.09, 27,555.12 and 12,906.68

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Solution

The fourth proportional to 19,976.09, 27,555.12 and 12,906.68 is: 17,803.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,976.09 : 27,555.12 = 12,906.68 : x
  2. Step 2: Convert to fraction form
    19,976.09/27,555.12 = 12,906.68/x
  3. Step 3: Cross multiply
    19,976.09x = 27,555.12 × 12,906.68
  4. Step 4: Simplify right side
    19,976.09x = 355,644,978.43
  5. Step 5: Solve for x
    x = 355,644,978.43/19,976.09
  6. Step 6: Final answer
    x = 17,803.54

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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.