Home / 12,128,420.15-18,188,201.55-4,041,659.60

Finding the Fourth Proportional to 12,128,420.15, 18,188,201.55 and 4,041,659.60

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Solution

The fourth proportional to 12,128,420.15, 18,188,201.55 and 4,041,659.60 is: 6,061,013.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,420.15 : 18,188,201.55 = 4,041,659.60 : x
  2. Step 2: Convert to fraction form
    12,128,420.15/18,188,201.55 = 4,041,659.60/x
  3. Step 3: Cross multiply
    12,128,420.15x = 18,188,201.55 × 4,041,659.60
  4. Step 4: Simplify right side
    12,128,420.15x = 73,510,519,401,292.39
  5. Step 5: Solve for x
    x = 73,510,519,401,292.39/12,128,420.15
  6. Step 6: Final answer
    x = 6,061,013.59

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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.