Home / 20,629,498-30,903,813.84-11,975,452.72

Finding the Fourth Proportional to 20,629,498, 30,903,813.84 and 11,975,452.72

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Solution

The fourth proportional to 20,629,498, 30,903,813.84 and 11,975,452.72 is: 17,939,707.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,629,498 : 30,903,813.84 = 11,975,452.72 : x
  2. Step 2: Convert to fraction form
    20,629,498/30,903,813.84 = 11,975,452.72/x
  3. Step 3: Cross multiply
    20,629,498x = 30,903,813.84 × 11,975,452.72
  4. Step 4: Simplify right side
    20,629,498x = 370,087,161,508,601.69
  5. Step 5: Solve for x
    x = 370,087,161,508,601.69/20,629,498
  6. Step 6: Final answer
    x = 17,939,707.57

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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.