Home / 21,339,930.78-29,449,818.25-13,078,396.64

Finding the Fourth Proportional to 21,339,930.78, 29,449,818.25 and 13,078,396.64

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Solution

The fourth proportional to 21,339,930.78, 29,449,818.25 and 13,078,396.64 is: 18,048,624.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,339,930.78 : 29,449,818.25 = 13,078,396.64 : x
  2. Step 2: Convert to fraction form
    21,339,930.78/29,449,818.25 = 13,078,396.64/x
  3. Step 3: Cross multiply
    21,339,930.78x = 29,449,818.25 × 13,078,396.64
  4. Step 4: Simplify right side
    21,339,930.78x = 385,156,404,049,410.69
  5. Step 5: Solve for x
    x = 385,156,404,049,410.69/21,339,930.78
  6. Step 6: Final answer
    x = 18,048,624.81

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.