Home / 13,130,906.76-18,122,188.86-10,921,872.60

Finding the Fourth Proportional to 13,130,906.76, 18,122,188.86 and 10,921,872.60

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Solution

The fourth proportional to 13,130,906.76, 18,122,188.86 and 10,921,872.60 is: 15,073,463.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,130,906.76 : 18,122,188.86 = 10,921,872.60 : x
  2. Step 2: Convert to fraction form
    13,130,906.76/18,122,188.86 = 10,921,872.60/x
  3. Step 3: Cross multiply
    13,130,906.76x = 18,122,188.86 × 10,921,872.60
  4. Step 4: Simplify right side
    13,130,906.76x = 197,928,237,962,059.22
  5. Step 5: Solve for x
    x = 197,928,237,962,059.22/13,130,906.76
  6. Step 6: Final answer
    x = 15,073,463.06

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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.