Home / 12,356,799.72-18,538,286.82-8,720,629.20

Finding the Fourth Proportional to 12,356,799.72, 18,538,286.82 and 8,720,629.20

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Solution

The fourth proportional to 12,356,799.72, 18,538,286.82 and 8,720,629.20 is: 13,083,122.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,356,799.72 : 18,538,286.82 = 8,720,629.20 : x
  2. Step 2: Convert to fraction form
    12,356,799.72/18,538,286.82 = 8,720,629.20/x
  3. Step 3: Cross multiply
    12,356,799.72x = 18,538,286.82 × 8,720,629.20
  4. Step 4: Simplify right side
    12,356,799.72x = 161,665,525,360,467.12
  5. Step 5: Solve for x
    x = 161,665,525,360,467.12/12,356,799.72
  6. Step 6: Final answer
    x = 13,083,122.57

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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.