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Finding the Fourth Proportional to 18,492.45, 27,755.16 and 8,637.28

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Solution

The fourth proportional to 18,492.45, 27,755.16 and 8,637.28 is: 12,963.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,492.45 : 27,755.16 = 8,637.28 : x
  2. Step 2: Convert to fraction form
    18,492.45/27,755.16 = 8,637.28/x
  3. Step 3: Cross multiply
    18,492.45x = 27,755.16 × 8,637.28
  4. Step 4: Simplify right side
    18,492.45x = 239,729,142.71
  5. Step 5: Solve for x
    x = 239,729,142.71/18,492.45
  6. Step 6: Final answer
    x = 12,963.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.