Home / 20,685,215.31-28,546,893.51-11,392,783.53

Finding the Fourth Proportional to 20,685,215.31, 28,546,893.51 and 11,392,783.53

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Solution

The fourth proportional to 20,685,215.31, 28,546,893.51 and 11,392,783.53 is: 15,722,755.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,685,215.31 : 28,546,893.51 = 11,392,783.53 : x
  2. Step 2: Convert to fraction form
    20,685,215.31/28,546,893.51 = 11,392,783.53/x
  3. Step 3: Cross multiply
    20,685,215.31x = 28,546,893.51 × 11,392,783.53
  4. Step 4: Simplify right side
    20,685,215.31x = 325,228,578,213,391.88
  5. Step 5: Solve for x
    x = 325,228,578,213,391.88/20,685,215.31
  6. Step 6: Final answer
    x = 15,722,755.28

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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.