Home / 18,907,912.77-26,104,987.17-15,431,556.12

Finding the Fourth Proportional to 18,907,912.77, 26,104,987.17 and 15,431,556.12

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Solution

The fourth proportional to 18,907,912.77, 26,104,987.17 and 15,431,556.12 is: 21,305,396.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,907,912.77 : 26,104,987.17 = 15,431,556.12 : x
  2. Step 2: Convert to fraction form
    18,907,912.77/26,104,987.17 = 15,431,556.12/x
  3. Step 3: Cross multiply
    18,907,912.77x = 26,104,987.17 × 15,431,556.12
  4. Step 4: Simplify right side
    18,907,912.77x = 402,840,574,525,735
  5. Step 5: Solve for x
    x = 402,840,574,525,735/18,907,912.77
  6. Step 6: Final answer
    x = 21,305,396.29

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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.