Home / 21,842,912.07-30,149,213.45-12,678,507.27

Finding the Fourth Proportional to 21,842,912.07, 30,149,213.45 and 12,678,507.27

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Solution

The fourth proportional to 21,842,912.07, 30,149,213.45 and 12,678,507.27 is: 17,499,819.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,842,912.07 : 30,149,213.45 = 12,678,507.27 : x
  2. Step 2: Convert to fraction form
    21,842,912.07/30,149,213.45 = 12,678,507.27/x
  3. Step 3: Cross multiply
    21,842,912.07x = 30,149,213.45 × 12,678,507.27
  4. Step 4: Simplify right side
    21,842,912.07x = 382,247,021,847,214.25
  5. Step 5: Solve for x
    x = 382,247,021,847,214.25/21,842,912.07
  6. Step 6: Final answer
    x = 17,499,819.65

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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.