Home / 12,645,965.36-18,968,961.72-5,919,103.28

Finding the Fourth Proportional to 12,645,965.36, 18,968,961.72 and 5,919,103.28

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Solution

The fourth proportional to 12,645,965.36, 18,968,961.72 and 5,919,103.28 is: 8,878,661.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645,965.36 : 18,968,961.72 = 5,919,103.28 : x
  2. Step 2: Convert to fraction form
    12,645,965.36/18,968,961.72 = 5,919,103.28/x
  3. Step 3: Cross multiply
    12,645,965.36x = 18,968,961.72 × 5,919,103.28
  4. Step 4: Simplify right side
    12,645,965.36x = 112,279,243,535,046.44
  5. Step 5: Solve for x
    x = 112,279,243,535,046.44/12,645,965.36
  6. Step 6: Final answer
    x = 8,878,661.32

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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.