Home / 20,849,163.12-28,771,825.32-11,681,871.48

Finding the Fourth Proportional to 20,849,163.12, 28,771,825.32 and 11,681,871.48

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Solution

The fourth proportional to 20,849,163.12, 28,771,825.32 and 11,681,871.48 is: 16,120,971.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,849,163.12 : 28,771,825.32 = 11,681,871.48 : x
  2. Step 2: Convert to fraction form
    20,849,163.12/28,771,825.32 = 11,681,871.48/x
  3. Step 3: Cross multiply
    20,849,163.12x = 28,771,825.32 × 11,681,871.48
  4. Step 4: Simplify right side
    20,849,163.12x = 336,108,765,633,249.88
  5. Step 5: Solve for x
    x = 336,108,765,633,249.88/20,849,163.12
  6. Step 6: Final answer
    x = 16,120,971.56

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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.