Home / 21,842,406.36-30,143,161.38-11,919,929.72

Finding the Fourth Proportional to 21,842,406.36, 30,143,161.38 and 11,919,929.72

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Solution

The fourth proportional to 21,842,406.36, 30,143,161.38 and 11,919,929.72 is: 16,449,852.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,842,406.36 : 30,143,161.38 = 11,919,929.72 : x
  2. Step 2: Convert to fraction form
    21,842,406.36/30,143,161.38 = 11,919,929.72/x
  3. Step 3: Cross multiply
    21,842,406.36x = 30,143,161.38 × 11,919,929.72
  4. Step 4: Simplify right side
    21,842,406.36x = 359,304,365,082,202.12
  5. Step 5: Solve for x
    x = 359,304,365,082,202.12/21,842,406.36
  6. Step 6: Final answer
    x = 16,449,852.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.