Home / 15,669.40-21,619.46-10,083.64

Finding the Fourth Proportional to 15,669.40, 21,619.46 and 10,083.64

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Solution

The fourth proportional to 15,669.40, 21,619.46 and 10,083.64 is: 13,912.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,669.40 : 21,619.46 = 10,083.64 : x
  2. Step 2: Convert to fraction form
    15,669.40/21,619.46 = 10,083.64/x
  3. Step 3: Cross multiply
    15,669.40x = 21,619.46 × 10,083.64
  4. Step 4: Simplify right side
    15,669.40x = 218,002,851.63
  5. Step 5: Solve for x
    x = 218,002,851.63/15,669.40
  6. Step 6: Final answer
    x = 13,912.65

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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.