Home / 19,722.23-27,205.72-12,906.79

Finding the Fourth Proportional to 19,722.23, 27,205.72 and 12,906.79

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Solution

The fourth proportional to 19,722.23, 27,205.72 and 12,906.79 is: 17,804.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,722.23 : 27,205.72 = 12,906.79 : x
  2. Step 2: Convert to fraction form
    19,722.23/27,205.72 = 12,906.79/x
  3. Step 3: Cross multiply
    19,722.23x = 27,205.72 × 12,906.79
  4. Step 4: Simplify right side
    19,722.23x = 351,138,640.19
  5. Step 5: Solve for x
    x = 351,138,640.19/19,722.23
  6. Step 6: Final answer
    x = 17,804.20

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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.