Home / 12,780,702.80-19,181,940.60-5,213,099.60

Finding the Fourth Proportional to 12,780,702.80, 19,181,940.60 and 5,213,099.60

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Solution

The fourth proportional to 12,780,702.80, 19,181,940.60 and 5,213,099.60 is: 7,824,089.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780,702.80 : 19,181,940.60 = 5,213,099.60 : x
  2. Step 2: Convert to fraction form
    12,780,702.80/19,181,940.60 = 5,213,099.60/x
  3. Step 3: Cross multiply
    12,780,702.80x = 19,181,940.60 × 5,213,099.60
  4. Step 4: Simplify right side
    12,780,702.80x = 99,997,366,869,083.77
  5. Step 5: Solve for x
    x = 99,997,366,869,083.77/12,780,702.80
  6. Step 6: Final answer
    x = 7,824,089.84

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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.