Home / 20,777,104.80-31,165,657.20-11,819,152.80

Finding the Fourth Proportional to 20,777,104.80, 31,165,657.20 and 11,819,152.80

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Solution

The fourth proportional to 20,777,104.80, 31,165,657.20 and 11,819,152.80 is: 17,728,729.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,777,104.80 : 31,165,657.20 = 11,819,152.80 : x
  2. Step 2: Convert to fraction form
    20,777,104.80/31,165,657.20 = 11,819,152.80/x
  3. Step 3: Cross multiply
    20,777,104.80x = 31,165,657.20 × 11,819,152.80
  4. Step 4: Simplify right side
    20,777,104.80x = 368,351,664,559,220.19
  5. Step 5: Solve for x
    x = 368,351,664,559,220.19/20,777,104.80
  6. Step 6: Final answer
    x = 17,728,729.20

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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.