Home / 12,111,745.20-18,170,825.40-5,285,389.20

Finding the Fourth Proportional to 12,111,745.20, 18,170,825.40 and 5,285,389.20

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Solution

The fourth proportional to 12,111,745.20, 18,170,825.40 and 5,285,389.20 is: 7,929,483.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,111,745.20 : 18,170,825.40 = 5,285,389.20 : x
  2. Step 2: Convert to fraction form
    12,111,745.20/18,170,825.40 = 5,285,389.20/x
  3. Step 3: Cross multiply
    12,111,745.20x = 18,170,825.40 × 5,285,389.20
  4. Step 4: Simplify right side
    12,111,745.20x = 96,039,884,324,245.67
  5. Step 5: Solve for x
    x = 96,039,884,324,245.67/12,111,745.20
  6. Step 6: Final answer
    x = 7,929,483.55

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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.