Home / 12,645,971.36-18,968,970.72-5,919,109.28

Finding the Fourth Proportional to 12,645,971.36, 18,968,970.72 and 5,919,109.28

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Solution

The fourth proportional to 12,645,971.36, 18,968,970.72 and 5,919,109.28 is: 8,878,670.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,645,971.36 : 18,968,970.72 = 5,919,109.28 : x
  2. Step 2: Convert to fraction form
    12,645,971.36/18,968,970.72 = 5,919,109.28/x
  3. Step 3: Cross multiply
    12,645,971.36x = 18,968,970.72 × 5,919,109.28
  4. Step 4: Simplify right side
    12,645,971.36x = 112,279,410,620,800.28
  5. Step 5: Solve for x
    x = 112,279,410,620,800.28/12,645,971.36
  6. Step 6: Final answer
    x = 8,878,670.32

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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.