Home / 18,758,420.40-28,137,630.60-7,972,136.40

Finding the Fourth Proportional to 18,758,420.40, 28,137,630.60 and 7,972,136.40

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Solution

The fourth proportional to 18,758,420.40, 28,137,630.60 and 7,972,136.40 is: 11,958,204.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,758,420.40 : 28,137,630.60 = 7,972,136.40 : x
  2. Step 2: Convert to fraction form
    18,758,420.40/28,137,630.60 = 7,972,136.40/x
  3. Step 3: Cross multiply
    18,758,420.40x = 28,137,630.60 × 7,972,136.40
  4. Step 4: Simplify right side
    18,758,420.40x = 224,317,029,116,013.88
  5. Step 5: Solve for x
    x = 224,317,029,116,013.88/18,758,420.40
  6. Step 6: Final answer
    x = 11,958,204.60

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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.