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Finding the Fourth Proportional to 15,882.08, 21,918.26 and 8,808.52

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Solution

The fourth proportional to 15,882.08, 21,918.26 and 8,808.52 is: 12,156.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,882.08 : 21,918.26 = 8,808.52 : x
  2. Step 2: Convert to fraction form
    15,882.08/21,918.26 = 8,808.52/x
  3. Step 3: Cross multiply
    15,882.08x = 21,918.26 × 8,808.52
  4. Step 4: Simplify right side
    15,882.08x = 193,067,431.58
  5. Step 5: Solve for x
    x = 193,067,431.58/15,882.08
  6. Step 6: Final answer
    x = 12,156.31

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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.