Home / 20,218,987.60-30,328,481.40-11,243,539.60

Finding the Fourth Proportional to 20,218,987.60, 30,328,481.40 and 11,243,539.60

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Solution

The fourth proportional to 20,218,987.60, 30,328,481.40 and 11,243,539.60 is: 16,865,309.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,218,987.60 : 30,328,481.40 = 11,243,539.60 : x
  2. Step 2: Convert to fraction form
    20,218,987.60/30,328,481.40 = 11,243,539.60/x
  3. Step 3: Cross multiply
    20,218,987.60x = 30,328,481.40 × 11,243,539.60
  4. Step 4: Simplify right side
    20,218,987.60x = 340,999,481,628,763.44
  5. Step 5: Solve for x
    x = 340,999,481,628,763.44/20,218,987.60
  6. Step 6: Final answer
    x = 16,865,309.40

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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.