Home / 20,816,907.21-28,730,338.20-11,994,669.54

Finding the Fourth Proportional to 20,816,907.21, 28,730,338.20 and 11,994,669.54

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Solution

The fourth proportional to 20,816,907.21, 28,730,338.20 and 11,994,669.54 is: 16,554,376.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,816,907.21 : 28,730,338.20 = 11,994,669.54 : x
  2. Step 2: Convert to fraction form
    20,816,907.21/28,730,338.20 = 11,994,669.54/x
  3. Step 3: Cross multiply
    20,816,907.21x = 28,730,338.20 × 11,994,669.54
  4. Step 4: Simplify right side
    20,816,907.21x = 344,610,912,481,438.38
  5. Step 5: Solve for x
    x = 344,610,912,481,438.38/20,816,907.21
  6. Step 6: Final answer
    x = 16,554,376.16

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1.5x scale

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.