Home / 12,618,919.80-18,928,379.70-7,567,630.20

Finding the Fourth Proportional to 12,618,919.80, 18,928,379.70 and 7,567,630.20

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Solution

The fourth proportional to 12,618,919.80, 18,928,379.70 and 7,567,630.20 is: 11,351,445.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,618,919.80 : 18,928,379.70 = 7,567,630.20 : x
  2. Step 2: Convert to fraction form
    12,618,919.80/18,928,379.70 = 7,567,630.20/x
  3. Step 3: Cross multiply
    12,618,919.80x = 18,928,379.70 × 7,567,630.20
  4. Step 4: Simplify right side
    12,618,919.80x = 143,242,977,854,786.94
  5. Step 5: Solve for x
    x = 143,242,977,854,786.94/12,618,919.80
  6. Step 6: Final answer
    x = 11,351,445.30

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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.