Home / 12,481,489.89-18,728,172.54-8,649,209.79

Finding the Fourth Proportional to 12,481,489.89, 18,728,172.54 and 8,649,209.79

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Solution

The fourth proportional to 12,481,489.89, 18,728,172.54 and 8,649,209.79 is: 12,977,929.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,481,489.89 : 18,728,172.54 = 8,649,209.79 : x
  2. Step 2: Convert to fraction form
    12,481,489.89/18,728,172.54 = 8,649,209.79/x
  3. Step 3: Cross multiply
    12,481,489.89x = 18,728,172.54 × 8,649,209.79
  4. Step 4: Simplify right side
    12,481,489.89x = 161,983,893,281,777.16
  5. Step 5: Solve for x
    x = 161,983,893,281,777.16/12,481,489.89
  6. Step 6: Final answer
    x = 12,977,929.29

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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.