Home / 13,188,143.68-18,199,636.60-8,031,503.84

Finding the Fourth Proportional to 13,188,143.68, 18,199,636.60 and 8,031,503.84

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Solution

The fourth proportional to 13,188,143.68, 18,199,636.60 and 8,031,503.84 is: 11,083,474.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188,143.68 : 18,199,636.60 = 8,031,503.84 : x
  2. Step 2: Convert to fraction form
    13,188,143.68/18,199,636.60 = 8,031,503.84/x
  3. Step 3: Cross multiply
    13,188,143.68x = 18,199,636.60 × 8,031,503.84
  4. Step 4: Simplify right side
    13,188,143.68x = 146,170,451,239,504.56
  5. Step 5: Solve for x
    x = 146,170,451,239,504.56/13,188,143.68
  6. Step 6: Final answer
    x = 11,083,474.28

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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.