Home / 21,720,012.15-29,974,134.26-11,930,661.37

Finding the Fourth Proportional to 21,720,012.15, 29,974,134.26 and 11,930,661.37

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Solution

The fourth proportional to 21,720,012.15, 29,974,134.26 and 11,930,661.37 is: 16,464,596.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,720,012.15 : 29,974,134.26 = 11,930,661.37 : x
  2. Step 2: Convert to fraction form
    21,720,012.15/29,974,134.26 = 11,930,661.37/x
  3. Step 3: Cross multiply
    21,720,012.15x = 29,974,134.26 × 11,930,661.37
  4. Step 4: Simplify right side
    21,720,012.15x = 357,611,245,715,171.81
  5. Step 5: Solve for x
    x = 357,611,245,715,171.81/21,720,012.15
  6. Step 6: Final answer
    x = 16,464,596.94

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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.