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Finding the Fourth Proportional to 12,713.60, 19,077.60 and 4,922.96

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Solution

The fourth proportional to 12,713.60, 19,077.60 and 4,922.96 is: 7,387.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,713.60 : 19,077.60 = 4,922.96 : x
  2. Step 2: Convert to fraction form
    12,713.60/19,077.60 = 4,922.96/x
  3. Step 3: Cross multiply
    12,713.60x = 19,077.60 × 4,922.96
  4. Step 4: Simplify right side
    12,713.60x = 93,918,261.70
  5. Step 5: Solve for x
    x = 93,918,261.70/12,713.60
  6. Step 6: Final answer
    x = 7,387.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.