Home / 21,257,665.89-29,336,540.34-11,968,427.84

Finding the Fourth Proportional to 21,257,665.89, 29,336,540.34 and 11,968,427.84

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Solution

The fourth proportional to 21,257,665.89, 29,336,540.34 and 11,968,427.84 is: 16,516,971.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,257,665.89 : 29,336,540.34 = 11,968,427.84 : x
  2. Step 2: Convert to fraction form
    21,257,665.89/29,336,540.34 = 11,968,427.84/x
  3. Step 3: Cross multiply
    21,257,665.89x = 29,336,540.34 × 11,968,427.84
  4. Step 4: Simplify right side
    21,257,665.89x = 351,112,265,987,856.38
  5. Step 5: Solve for x
    x = 351,112,265,987,856.38/21,257,665.89
  6. Step 6: Final answer
    x = 16,516,971.70

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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.