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Finding the Fourth Proportional to 12,319.73, 18,493.41 and 4,929.34

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Solution

The fourth proportional to 12,319.73, 18,493.41 and 4,929.34 is: 7,399.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,319.73 : 18,493.41 = 4,929.34 : x
  2. Step 2: Convert to fraction form
    12,319.73/18,493.41 = 4,929.34/x
  3. Step 3: Cross multiply
    12,319.73x = 18,493.41 × 4,929.34
  4. Step 4: Simplify right side
    12,319.73x = 91,160,305.65
  5. Step 5: Solve for x
    x = 91,160,305.65/12,319.73
  6. Step 6: Final answer
    x = 7,399.54

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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.