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Finding the Fourth Proportional to 18,491.94, 27,713.76 and 8,493.06

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Solution

The fourth proportional to 18,491.94, 27,713.76 and 8,493.06 is: 12,728.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,491.94 : 27,713.76 = 8,493.06 : x
  2. Step 2: Convert to fraction form
    18,491.94/27,713.76 = 8,493.06/x
  3. Step 3: Cross multiply
    18,491.94x = 27,713.76 × 8,493.06
  4. Step 4: Simplify right side
    18,491.94x = 235,374,626.51
  5. Step 5: Solve for x
    x = 235,374,626.51/18,491.94
  6. Step 6: Final answer
    x = 12,728.50

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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.