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Finding the Fourth Proportional to 9,928,797.81, 13,670,067.03 and 8,472,649.47

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Solution

The fourth proportional to 9,928,797.81, 13,670,067.03 and 8,472,649.47 is: 11,665,227.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,928,797.81 : 13,670,067.03 = 8,472,649.47 : x
  2. Step 2: Convert to fraction form
    9,928,797.81/13,670,067.03 = 8,472,649.47/x
  3. Step 3: Cross multiply
    9,928,797.81x = 13,670,067.03 × 8,472,649.47
  4. Step 4: Simplify right side
    9,928,797.81x = 115,821,686,176,593.98
  5. Step 5: Solve for x
    x = 115,821,686,176,593.98/9,928,797.81
  6. Step 6: Final answer
    x = 11,665,227.59

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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.