Home / 20,620,494.74-28,453,119.44-11,916,986.64

Finding the Fourth Proportional to 20,620,494.74, 28,453,119.44 and 11,916,986.64

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Solution

The fourth proportional to 20,620,494.74, 28,453,119.44 and 11,916,986.64 is: 16,443,613.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,620,494.74 : 28,453,119.44 = 11,916,986.64 : x
  2. Step 2: Convert to fraction form
    20,620,494.74/28,453,119.44 = 11,916,986.64/x
  3. Step 3: Cross multiply
    20,620,494.74x = 28,453,119.44 × 11,916,986.64
  4. Step 4: Simplify right side
    20,620,494.74x = 339,075,444,173,219.38
  5. Step 5: Solve for x
    x = 339,075,444,173,219.38/20,620,494.74
  6. Step 6: Final answer
    x = 16,443,613.43

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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.