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Finding the Fourth Proportional to 19,558.78, 26,984.03 and 12,848.02

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Solution

The fourth proportional to 19,558.78, 26,984.03 and 12,848.02 is: 17,725.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,558.78 : 26,984.03 = 12,848.02 : x
  2. Step 2: Convert to fraction form
    19,558.78/26,984.03 = 12,848.02/x
  3. Step 3: Cross multiply
    19,558.78x = 26,984.03 × 12,848.02
  4. Step 4: Simplify right side
    19,558.78x = 346,691,357.12
  5. Step 5: Solve for x
    x = 346,691,357.12/19,558.78
  6. Step 6: Final answer
    x = 17,725.61

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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.