Home / 13,455,738.70-20,183,608.05-7,692,556.30

Finding the Fourth Proportional to 13,455,738.70, 20,183,608.05 and 7,692,556.30

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Solution

The fourth proportional to 13,455,738.70, 20,183,608.05 and 7,692,556.30 is: 11,538,834.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,455,738.70 : 20,183,608.05 = 7,692,556.30 : x
  2. Step 2: Convert to fraction form
    13,455,738.70/20,183,608.05 = 7,692,556.30/x
  3. Step 3: Cross multiply
    13,455,738.70x = 20,183,608.05 × 7,692,556.30
  4. Step 4: Simplify right side
    13,455,738.70x = 155,263,541,261,758.22
  5. Step 5: Solve for x
    x = 155,263,541,261,758.22/13,455,738.70
  6. Step 6: Final answer
    x = 11,538,834.45

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Double scale
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Similar ratio
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1.5x scale

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.