Home / 13,667,090.18-18,860,978.12-7,555,912.34

Finding the Fourth Proportional to 13,667,090.18, 18,860,978.12 and 7,555,912.34

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Solution

The fourth proportional to 13,667,090.18, 18,860,978.12 and 7,555,912.34 is: 10,427,376.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,667,090.18 : 18,860,978.12 = 7,555,912.34 : x
  2. Step 2: Convert to fraction form
    13,667,090.18/18,860,978.12 = 7,555,912.34/x
  3. Step 3: Cross multiply
    13,667,090.18x = 18,860,978.12 × 7,555,912.34
  4. Step 4: Simplify right side
    13,667,090.18x = 142,511,897,321,378
  5. Step 5: Solve for x
    x = 142,511,897,321,378/13,667,090.18
  6. Step 6: Final answer
    x = 10,427,376.67

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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.