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Finding the Fourth Proportional to 18,996.41, 28,494.39 and 8,463.74

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Solution

The fourth proportional to 18,996.41, 28,494.39 and 8,463.74 is: 12,695.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,996.41 : 28,494.39 = 8,463.74 : x
  2. Step 2: Convert to fraction form
    18,996.41/28,494.39 = 8,463.74/x
  3. Step 3: Cross multiply
    18,996.41x = 28,494.39 × 8,463.74
  4. Step 4: Simplify right side
    18,996.41x = 241,168,965.95
  5. Step 5: Solve for x
    x = 241,168,965.95/18,996.41
  6. Step 6: Final answer
    x = 12,695.50

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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.