Home / 20,816,911.21-28,730,343.72-11,994,673.54

Finding the Fourth Proportional to 20,816,911.21, 28,730,343.72 and 11,994,673.54

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Solution

The fourth proportional to 20,816,911.21, 28,730,343.72 and 11,994,673.54 is: 16,554,381.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,816,911.21 : 28,730,343.72 = 11,994,673.54 : x
  2. Step 2: Convert to fraction form
    20,816,911.21/28,730,343.72 = 11,994,673.54/x
  3. Step 3: Cross multiply
    20,816,911.21x = 28,730,343.72 × 11,994,673.54
  4. Step 4: Simplify right side
    20,816,911.21x = 344,611,093,613,389.12
  5. Step 5: Solve for x
    x = 344,611,093,613,389.12/20,816,911.21
  6. Step 6: Final answer
    x = 16,554,381.68

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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.