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Finding the Fourth Proportional to 15,467.25, 21,347.99 and 8,753.25

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Solution

The fourth proportional to 15,467.25, 21,347.99 and 8,753.25 is: 12,081.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,467.25 : 21,347.99 = 8,753.25 : x
  2. Step 2: Convert to fraction form
    15,467.25/21,347.99 = 8,753.25/x
  3. Step 3: Cross multiply
    15,467.25x = 21,347.99 × 8,753.25
  4. Step 4: Simplify right side
    15,467.25x = 186,864,249.70
  5. Step 5: Solve for x
    x = 186,864,249.70/15,467.25
  6. Step 6: Final answer
    x = 12,081.28

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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.