Home / 21,091.98-31,617.30-11,736.48

Finding the Fourth Proportional to 21,091.98, 31,617.30 and 11,736.48

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Solution

The fourth proportional to 21,091.98, 31,617.30 and 11,736.48 is: 17,593.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,091.98 : 31,617.30 = 11,736.48 : x
  2. Step 2: Convert to fraction form
    21,091.98/31,617.30 = 11,736.48/x
  3. Step 3: Cross multiply
    21,091.98x = 31,617.30 × 11,736.48
  4. Step 4: Simplify right side
    21,091.98x = 371,075,809.10
  5. Step 5: Solve for x
    x = 371,075,809.10/21,091.98
  6. Step 6: Final answer
    x = 17,593.22

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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.