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Finding the Fourth Proportional to 15,523.97, 21,422.97 and 8,450.51

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Solution

The fourth proportional to 15,523.97, 21,422.97 and 8,450.51 is: 11,661.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,523.97 : 21,422.97 = 8,450.51 : x
  2. Step 2: Convert to fraction form
    15,523.97/21,422.97 = 8,450.51/x
  3. Step 3: Cross multiply
    15,523.97x = 21,422.97 × 8,450.51
  4. Step 4: Simplify right side
    15,523.97x = 181,034,915.10
  5. Step 5: Solve for x
    x = 181,034,915.10/15,523.97
  6. Step 6: Final answer
    x = 11,661.64

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1.5x scale

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.