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Finding the Fourth Proportional to 18,883.84, 26,069.44 and 12,629.12

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Solution

The fourth proportional to 18,883.84, 26,069.44 and 12,629.12 is: 17,434.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,883.84 : 26,069.44 = 12,629.12 : x
  2. Step 2: Convert to fraction form
    18,883.84/26,069.44 = 12,629.12/x
  3. Step 3: Cross multiply
    18,883.84x = 26,069.44 × 12,629.12
  4. Step 4: Simplify right side
    18,883.84x = 329,234,086.09
  5. Step 5: Solve for x
    x = 329,234,086.09/18,883.84
  6. Step 6: Final answer
    x = 17,434.70

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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.