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Finding the Fourth Proportional to 19,798,734.34, 27,322,312.24 and 10,978,806.97

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Solution

The fourth proportional to 19,798,734.34, 27,322,312.24 and 10,978,806.97 is: 15,150,786.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,798,734.34 : 27,322,312.24 = 10,978,806.97 : x
  2. Step 2: Convert to fraction form
    19,798,734.34/27,322,312.24 = 10,978,806.97/x
  3. Step 3: Cross multiply
    19,798,734.34x = 27,322,312.24 × 10,978,806.97
  4. Step 4: Simplify right side
    19,798,734.34x = 299,966,391,997,191
  5. Step 5: Solve for x
    x = 299,966,391,997,191/19,798,734.34
  6. Step 6: Final answer
    x = 15,150,786.25

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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.