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Finding the Fourth Proportional to 15,818.26, 21,828.26 and 8,744.26

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Solution

The fourth proportional to 15,818.26, 21,828.26 and 8,744.26 is: 12,066.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,818.26 : 21,828.26 = 8,744.26 : x
  2. Step 2: Convert to fraction form
    15,818.26/21,828.26 = 8,744.26/x
  3. Step 3: Cross multiply
    15,818.26x = 21,828.26 × 8,744.26
  4. Step 4: Simplify right side
    15,818.26x = 190,871,980.79
  5. Step 5: Solve for x
    x = 190,871,980.79/15,818.26
  6. Step 6: Final answer
    x = 12,066.56

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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.