Home / 21,075.33-29,084.06-11,515.41

Finding the Fourth Proportional to 21,075.33, 29,084.06 and 11,515.41

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Solution

The fourth proportional to 21,075.33, 29,084.06 and 11,515.41 is: 15,891.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,075.33 : 29,084.06 = 11,515.41 : x
  2. Step 2: Convert to fraction form
    21,075.33/29,084.06 = 11,515.41/x
  3. Step 3: Cross multiply
    21,075.33x = 29,084.06 × 11,515.41
  4. Step 4: Simplify right side
    21,075.33x = 334,914,875.36
  5. Step 5: Solve for x
    x = 334,914,875.36/21,075.33
  6. Step 6: Final answer
    x = 15,891.32

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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.