Home / 12,457,815.30-18,686,722.95-4,379,912.10

Finding the Fourth Proportional to 12,457,815.30, 18,686,722.95 and 4,379,912.10

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Solution

The fourth proportional to 12,457,815.30, 18,686,722.95 and 4,379,912.10 is: 6,569,868.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,457,815.30 : 18,686,722.95 = 4,379,912.10 : x
  2. Step 2: Convert to fraction form
    12,457,815.30/18,686,722.95 = 4,379,912.10/x
  3. Step 3: Cross multiply
    12,457,815.30x = 18,686,722.95 × 4,379,912.10
  4. Step 4: Simplify right side
    12,457,815.30x = 81,846,203,958,052.69
  5. Step 5: Solve for x
    x = 81,846,203,958,052.69/12,457,815.30
  6. Step 6: Final answer
    x = 6,569,868.15

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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.