Home / 15,173,110.78-20,938,850.53-8,203,739.56

Finding the Fourth Proportional to 15,173,110.78, 20,938,850.53 and 8,203,739.56

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Solution

The fourth proportional to 15,173,110.78, 20,938,850.53 and 8,203,739.56 is: 11,321,137.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,173,110.78 : 20,938,850.53 = 8,203,739.56 : x
  2. Step 2: Convert to fraction form
    15,173,110.78/20,938,850.53 = 8,203,739.56/x
  3. Step 3: Cross multiply
    15,173,110.78x = 20,938,850.53 × 8,203,739.56
  4. Step 4: Simplify right side
    15,173,110.78x = 171,776,876,361,031.50
  5. Step 5: Solve for x
    x = 171,776,876,361,031.50/15,173,110.78
  6. Step 6: Final answer
    x = 11,321,137.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.