Home / 12,391,439.78-18,579,942.56-4,809,548.18

Finding the Fourth Proportional to 12,391,439.78, 18,579,942.56 and 4,809,548.18

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Solution

The fourth proportional to 12,391,439.78, 18,579,942.56 and 4,809,548.18 is: 7,211,521.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,391,439.78 : 18,579,942.56 = 4,809,548.18 : x
  2. Step 2: Convert to fraction form
    12,391,439.78/18,579,942.56 = 4,809,548.18/x
  3. Step 3: Cross multiply
    12,391,439.78x = 18,579,942.56 × 4,809,548.18
  4. Step 4: Simplify right side
    12,391,439.78x = 89,361,128,923,952.53
  5. Step 5: Solve for x
    x = 89,361,128,923,952.53/12,391,439.78
  6. Step 6: Final answer
    x = 7,211,521.06

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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.