Home / 13,188,035.75-18,199,752.89-7,681,765.41

Finding the Fourth Proportional to 13,188,035.75, 18,199,752.89 and 7,681,765.41

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Solution

The fourth proportional to 13,188,035.75, 18,199,752.89 and 7,681,765.41 is: 10,600,989.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,188,035.75 : 18,199,752.89 = 7,681,765.41 : x
  2. Step 2: Convert to fraction form
    13,188,035.75/18,199,752.89 = 7,681,765.41/x
  3. Step 3: Cross multiply
    13,188,035.75x = 18,199,752.89 × 7,681,765.41
  4. Step 4: Simplify right side
    13,188,035.75x = 139,806,232,182,540.72
  5. Step 5: Solve for x
    x = 139,806,232,182,540.72/13,188,035.75
  6. Step 6: Final answer
    x = 10,600,989.78

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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.