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Finding the Fourth Proportional to 12,348.76, 18,511.80 and 4,948.60

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Solution

The fourth proportional to 12,348.76, 18,511.80 and 4,948.60 is: 7,418.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,348.76 : 18,511.80 = 4,948.60 : x
  2. Step 2: Convert to fraction form
    12,348.76/18,511.80 = 4,948.60/x
  3. Step 3: Cross multiply
    12,348.76x = 18,511.80 × 4,948.60
  4. Step 4: Simplify right side
    12,348.76x = 91,607,493.48
  5. Step 5: Solve for x
    x = 91,607,493.48/12,348.76
  6. Step 6: Final answer
    x = 7,418.36

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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.