Home / 21,209,051.38-31,769,437.39-13,494,481.78

Finding the Fourth Proportional to 21,209,051.38, 31,769,437.39 and 13,494,481.78

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Solution

The fourth proportional to 21,209,051.38, 31,769,437.39 and 13,494,481.78 is: 20,213,638.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,209,051.38 : 31,769,437.39 = 13,494,481.78 : x
  2. Step 2: Convert to fraction form
    21,209,051.38/31,769,437.39 = 13,494,481.78/x
  3. Step 3: Cross multiply
    21,209,051.38x = 31,769,437.39 × 13,494,481.78
  4. Step 4: Simplify right side
    21,209,051.38x = 428,712,094,065,893.12
  5. Step 5: Solve for x
    x = 428,712,094,065,893.12/21,209,051.38
  6. Step 6: Final answer
    x = 20,213,638.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.