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Finding the Fourth Proportional to 15,663, 21,628.98 and 10,083.72

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Solution

The fourth proportional to 15,663, 21,628.98 and 10,083.72 is: 13,924.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,663 : 21,628.98 = 10,083.72 : x
  2. Step 2: Convert to fraction form
    15,663/21,628.98 = 10,083.72/x
  3. Step 3: Cross multiply
    15,663x = 21,628.98 × 10,083.72
  4. Step 4: Simplify right side
    15,663x = 218,100,578.21
  5. Step 5: Solve for x
    x = 218,100,578.21/15,663
  6. Step 6: Final answer
    x = 13,924.57

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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.