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Finding the Fourth Proportional to 15,588.18, 21,509.82 and 8,873.82

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Solution

The fourth proportional to 15,588.18, 21,509.82 and 8,873.82 is: 12,244.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,588.18 : 21,509.82 = 8,873.82 : x
  2. Step 2: Convert to fraction form
    15,588.18/21,509.82 = 8,873.82/x
  3. Step 3: Cross multiply
    15,588.18x = 21,509.82 × 8,873.82
  4. Step 4: Simplify right side
    15,588.18x = 190,874,270.91
  5. Step 5: Solve for x
    x = 190,874,270.91/15,588.18
  6. Step 6: Final answer
    x = 12,244.81

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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.