Home / 13,215,879.40-19,821,454.30-8,409,290.80

Finding the Fourth Proportional to 13,215,879.40, 19,821,454.30 and 8,409,290.80

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Solution

The fourth proportional to 13,215,879.40, 19,821,454.30 and 8,409,290.80 is: 12,612,431.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,215,879.40 : 19,821,454.30 = 8,409,290.80 : x
  2. Step 2: Convert to fraction form
    13,215,879.40/19,821,454.30 = 8,409,290.80/x
  3. Step 3: Cross multiply
    13,215,879.40x = 19,821,454.30 × 8,409,290.80
  4. Step 4: Simplify right side
    13,215,879.40x = 166,684,373,287,610.47
  5. Step 5: Solve for x
    x = 166,684,373,287,610.47/13,215,879.40
  6. Step 6: Final answer
    x = 12,612,431.47

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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.