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Finding the Fourth Proportional to 12,804.74, 19,193.90 and 4,905.09

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Solution

The fourth proportional to 12,804.74, 19,193.90 and 4,905.09 is: 7,352.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,804.74 : 19,193.90 = 4,905.09 : x
  2. Step 2: Convert to fraction form
    12,804.74/19,193.90 = 4,905.09/x
  3. Step 3: Cross multiply
    12,804.74x = 19,193.90 × 4,905.09
  4. Step 4: Simplify right side
    12,804.74x = 94,147,782.43
  5. Step 5: Solve for x
    x = 94,147,782.43/12,804.74
  6. Step 6: Final answer
    x = 7,352.58

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1.5x scale

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.