Home / 20,601,551.80-28,431,578.45-13,620,099.69

Finding the Fourth Proportional to 20,601,551.80, 28,431,578.45 and 13,620,099.69

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Solution

The fourth proportional to 20,601,551.80, 28,431,578.45 and 13,620,099.69 is: 18,796,687.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601,551.80 : 28,431,578.45 = 13,620,099.69 : x
  2. Step 2: Convert to fraction form
    20,601,551.80/28,431,578.45 = 13,620,099.69/x
  3. Step 3: Cross multiply
    20,601,551.80x = 28,431,578.45 × 13,620,099.69
  4. Step 4: Simplify right side
    20,601,551.80x = 387,240,932,833,055.62
  5. Step 5: Solve for x
    x = 387,240,932,833,055.62/20,601,551.80
  6. Step 6: Final answer
    x = 18,796,687.58

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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.