Home / 19,680.33-27,138.27-12,957.37

Finding the Fourth Proportional to 19,680.33, 27,138.27 and 12,957.37

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Solution

The fourth proportional to 19,680.33, 27,138.27 and 12,957.37 is: 17,867.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,680.33 : 27,138.27 = 12,957.37 : x
  2. Step 2: Convert to fraction form
    19,680.33/27,138.27 = 12,957.37/x
  3. Step 3: Cross multiply
    19,680.33x = 27,138.27 × 12,957.37
  4. Step 4: Simplify right side
    19,680.33x = 351,640,586.29
  5. Step 5: Solve for x
    x = 351,640,586.29/19,680.33
  6. Step 6: Final answer
    x = 17,867.61

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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.