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Finding the Fourth Proportional to 12,492.14, 17,209.88 and 8,708.43

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Solution

The fourth proportional to 12,492.14, 17,209.88 and 8,708.43 is: 11,997.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,492.14 : 17,209.88 = 8,708.43 : x
  2. Step 2: Convert to fraction form
    12,492.14/17,209.88 = 8,708.43/x
  3. Step 3: Cross multiply
    12,492.14x = 17,209.88 × 8,708.43
  4. Step 4: Simplify right side
    12,492.14x = 149,871,035.29
  5. Step 5: Solve for x
    x = 149,871,035.29/12,492.14
  6. Step 6: Final answer
    x = 11,997.23

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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.