Home / 21,270,745.12-31,899,425.40-6,890,476.48

Finding the Fourth Proportional to 21,270,745.12, 31,899,425.40 and 6,890,476.48

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Solution

The fourth proportional to 21,270,745.12, 31,899,425.40 and 6,890,476.48 is: 10,333,546.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270,745.12 : 31,899,425.40 = 6,890,476.48 : x
  2. Step 2: Convert to fraction form
    21,270,745.12/31,899,425.40 = 6,890,476.48/x
  3. Step 3: Cross multiply
    21,270,745.12x = 31,899,425.40 × 6,890,476.48
  4. Step 4: Simplify right side
    21,270,745.12x = 219,802,240,444,214.59
  5. Step 5: Solve for x
    x = 219,802,240,444,214.59/21,270,745.12
  6. Step 6: Final answer
    x = 10,333,546.81

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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.