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Finding the Fourth Proportional to 18,792.76, 25,926.84 and 12,422.38

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Solution

The fourth proportional to 18,792.76, 25,926.84 and 12,422.38 is: 17,138.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.76 : 25,926.84 = 12,422.38 : x
  2. Step 2: Convert to fraction form
    18,792.76/25,926.84 = 12,422.38/x
  3. Step 3: Cross multiply
    18,792.76x = 25,926.84 × 12,422.38
  4. Step 4: Simplify right side
    18,792.76x = 322,073,058.68
  5. Step 5: Solve for x
    x = 322,073,058.68/18,792.76
  6. Step 6: Final answer
    x = 17,138.15

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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.