Home / 21,980,918.34-30,313,817.86-13,721,747

Finding the Fourth Proportional to 21,980,918.34, 30,313,817.86 and 13,721,747

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Solution

The fourth proportional to 21,980,918.34, 30,313,817.86 and 13,721,747 is: 18,923,619.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,980,918.34 : 30,313,817.86 = 13,721,747 : x
  2. Step 2: Convert to fraction form
    21,980,918.34/30,313,817.86 = 13,721,747/x
  3. Step 3: Cross multiply
    21,980,918.34x = 30,313,817.86 × 13,721,747
  4. Step 4: Simplify right side
    21,980,918.34x = 415,958,539,279,001.44
  5. Step 5: Solve for x
    x = 415,958,539,279,001.44/21,980,918.34
  6. Step 6: Final answer
    x = 18,923,619.70

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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.