Home / 12,989,136.70-19,479,112.35-4,467,491.20

Finding the Fourth Proportional to 12,989,136.70, 19,479,112.35 and 4,467,491.20

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Solution

The fourth proportional to 12,989,136.70, 19,479,112.35 and 4,467,491.20 is: 6,699,657.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,989,136.70 : 19,479,112.35 = 4,467,491.20 : x
  2. Step 2: Convert to fraction form
    12,989,136.70/19,479,112.35 = 4,467,491.20/x
  3. Step 3: Cross multiply
    12,989,136.70x = 19,479,112.35 × 4,467,491.20
  4. Step 4: Simplify right side
    12,989,136.70x = 87,022,763,007,436.33
  5. Step 5: Solve for x
    x = 87,022,763,007,436.33/12,989,136.70
  6. Step 6: Final answer
    x = 6,699,657.18

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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.