Home / 13,089,400.80-19,645,765.20-7,691,301.60

Finding the Fourth Proportional to 13,089,400.80, 19,645,765.20 and 7,691,301.60

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Solution

The fourth proportional to 13,089,400.80, 19,645,765.20 and 7,691,301.60 is: 11,543,806.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,089,400.80 : 19,645,765.20 = 7,691,301.60 : x
  2. Step 2: Convert to fraction form
    13,089,400.80/19,645,765.20 = 7,691,301.60/x
  3. Step 3: Cross multiply
    13,089,400.80x = 19,645,765.20 × 7,691,301.60
  4. Step 4: Simplify right side
    13,089,400.80x = 151,101,505,315,984.31
  5. Step 5: Solve for x
    x = 151,101,505,315,984.31/13,089,400.80
  6. Step 6: Final answer
    x = 11,543,806.14

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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.