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Finding the Fourth Proportional to 34,212.96, 47,212.08 and 19,308

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Solution

The fourth proportional to 34,212.96, 47,212.08 and 19,308 is: 26,644.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,212.96 : 47,212.08 = 19,308 : x
  2. Step 2: Convert to fraction form
    34,212.96/47,212.08 = 19,308/x
  3. Step 3: Cross multiply
    34,212.96x = 47,212.08 × 19,308
  4. Step 4: Simplify right side
    34,212.96x = 911,570,840.64
  5. Step 5: Solve for x
    x = 911,570,840.64/34,212.96
  6. Step 6: Final answer
    x = 26,644.02

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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.