Home / 13,729,452.78-18,945,265.28-8,222,686.68

Finding the Fourth Proportional to 13,729,452.78, 18,945,265.28 and 8,222,686.68

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Solution

The fourth proportional to 13,729,452.78, 18,945,265.28 and 8,222,686.68 is: 11,346,481.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,729,452.78 : 18,945,265.28 = 8,222,686.68 : x
  2. Step 2: Convert to fraction form
    13,729,452.78/18,945,265.28 = 8,222,686.68/x
  3. Step 3: Cross multiply
    13,729,452.78x = 18,945,265.28 × 8,222,686.68
  4. Step 4: Simplify right side
    13,729,452.78x = 155,780,980,466,922.47
  5. Step 5: Solve for x
    x = 155,780,980,466,922.47/13,729,452.78
  6. Step 6: Final answer
    x = 11,346,481.39

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Double scale
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1.5x scale

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.