Home / 18,939,161.21-26,129,177.03-15,515,893.85

Finding the Fourth Proportional to 18,939,161.21, 26,129,177.03 and 15,515,893.85

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Solution

The fourth proportional to 18,939,161.21, 26,129,177.03 and 15,515,893.85 is: 21,406,309.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,939,161.21 : 26,129,177.03 = 15,515,893.85 : x
  2. Step 2: Convert to fraction form
    18,939,161.21/26,129,177.03 = 15,515,893.85/x
  3. Step 3: Cross multiply
    18,939,161.21x = 26,129,177.03 × 15,515,893.85
  4. Step 4: Simplify right side
    18,939,161.21x = 405,417,537,093,482.12
  5. Step 5: Solve for x
    x = 405,417,537,093,482.12/18,939,161.21
  6. Step 6: Final answer
    x = 21,406,309.01

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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.