Home / 13,987,356.87-20,957,840.82-8,505,870.62

Finding the Fourth Proportional to 13,987,356.87, 20,957,840.82 and 8,505,870.62

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Solution

The fourth proportional to 13,987,356.87, 20,957,840.82 and 8,505,870.62 is: 12,744,701.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,987,356.87 : 20,957,840.82 = 8,505,870.62 : x
  2. Step 2: Convert to fraction form
    13,987,356.87/20,957,840.82 = 8,505,870.62/x
  3. Step 3: Cross multiply
    13,987,356.87x = 20,957,840.82 × 8,505,870.62
  4. Step 4: Simplify right side
    13,987,356.87x = 178,264,682,446,945.34
  5. Step 5: Solve for x
    x = 178,264,682,446,945.34/13,987,356.87
  6. Step 6: Final answer
    x = 12,744,701.10

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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.