Home / 21,106,419.75-31,665,087.87-12,360,084.12

Finding the Fourth Proportional to 21,106,419.75, 31,665,087.87 and 12,360,084.12

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Solution

The fourth proportional to 21,106,419.75, 31,665,087.87 and 12,360,084.12 is: 18,543,322.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,106,419.75 : 31,665,087.87 = 12,360,084.12 : x
  2. Step 2: Convert to fraction form
    21,106,419.75/31,665,087.87 = 12,360,084.12/x
  3. Step 3: Cross multiply
    21,106,419.75x = 31,665,087.87 × 12,360,084.12
  4. Step 4: Simplify right side
    21,106,419.75x = 391,383,149,740,391.62
  5. Step 5: Solve for x
    x = 391,383,149,740,391.62/21,106,419.75
  6. Step 6: Final answer
    x = 18,543,322.57

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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.