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Finding the Fourth Proportional to 12,523.88, 17,305.98 and 8,981.48

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Solution

The fourth proportional to 12,523.88, 17,305.98 and 8,981.48 is: 12,410.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,523.88 : 17,305.98 = 8,981.48 : x
  2. Step 2: Convert to fraction form
    12,523.88/17,305.98 = 8,981.48/x
  3. Step 3: Cross multiply
    12,523.88x = 17,305.98 × 8,981.48
  4. Step 4: Simplify right side
    12,523.88x = 155,433,313.25
  5. Step 5: Solve for x
    x = 155,433,313.25/12,523.88
  6. Step 6: Final answer
    x = 12,410.96

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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.