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Finding the Fourth Proportional to 15,551,996.30, 21,795,189.70 and 15,551,996.30

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Solution

The fourth proportional to 15,551,996.30, 21,795,189.70 and 15,551,996.30 is: 21,795,189.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,551,996.30 : 21,795,189.70 = 15,551,996.30 : x
  2. Step 2: Convert to fraction form
    15,551,996.30/21,795,189.70 = 15,551,996.30/x
  3. Step 3: Cross multiply
    15,551,996.30x = 21,795,189.70 × 15,551,996.30
  4. Step 4: Simplify right side
    15,551,996.30x = 338,958,709,572,198.12
  5. Step 5: Solve for x
    x = 338,958,709,572,198.12/15,551,996.30
  6. Step 6: Final answer
    x = 21,795,189.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.