Home / 19,912.14-27,469.56-12,840.84

Finding the Fourth Proportional to 19,912.14, 27,469.56 and 12,840.84

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Solution

The fourth proportional to 19,912.14, 27,469.56 and 12,840.84 is: 17,714.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,912.14 : 27,469.56 = 12,840.84 : x
  2. Step 2: Convert to fraction form
    19,912.14/27,469.56 = 12,840.84/x
  3. Step 3: Cross multiply
    19,912.14x = 27,469.56 × 12,840.84
  4. Step 4: Simplify right side
    19,912.14x = 352,732,293.50
  5. Step 5: Solve for x
    x = 352,732,293.50/19,912.14
  6. Step 6: Final answer
    x = 17,714.43

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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.