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Finding the Fourth Proportional to 18,782,902.80, 28,174,354.20 and 9,216,964.80

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Solution

The fourth proportional to 18,782,902.80, 28,174,354.20 and 9,216,964.80 is: 13,825,447.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,782,902.80 : 28,174,354.20 = 9,216,964.80 : x
  2. Step 2: Convert to fraction form
    18,782,902.80/28,174,354.20 = 9,216,964.80/x
  3. Step 3: Cross multiply
    18,782,902.80x = 28,174,354.20 × 9,216,964.80
  4. Step 4: Simplify right side
    18,782,902.80x = 259,682,030,924,132.19
  5. Step 5: Solve for x
    x = 259,682,030,924,132.19/18,782,902.80
  6. Step 6: Final answer
    x = 13,825,447.20

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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.