Home / 12,644.40-18,968.66-4,747.54

Finding the Fourth Proportional to 12,644.40, 18,968.66 and 4,747.54

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Solution

The fourth proportional to 12,644.40, 18,968.66 and 4,747.54 is: 7,122.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,644.40 : 18,968.66 = 4,747.54 : x
  2. Step 2: Convert to fraction form
    12,644.40/18,968.66 = 4,747.54/x
  3. Step 3: Cross multiply
    12,644.40x = 18,968.66 × 4,747.54
  4. Step 4: Simplify right side
    12,644.40x = 90,054,454.31
  5. Step 5: Solve for x
    x = 90,054,454.31/12,644.40
  6. Step 6: Final answer
    x = 7,122.08

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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.