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Finding the Fourth Proportional to 15,593.45, 21,519.27 and 8,520.32

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Solution

The fourth proportional to 15,593.45, 21,519.27 and 8,520.32 is: 11,758.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,593.45 : 21,519.27 = 8,520.32 : x
  2. Step 2: Convert to fraction form
    15,593.45/21,519.27 = 8,520.32/x
  3. Step 3: Cross multiply
    15,593.45x = 21,519.27 × 8,520.32
  4. Step 4: Simplify right side
    15,593.45x = 183,351,120.36
  5. Step 5: Solve for x
    x = 183,351,120.36/15,593.45
  6. Step 6: Final answer
    x = 11,758.22

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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.