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Finding the Fourth Proportional to 18,630.44, 25,718.54 and 12,508.43

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Solution

The fourth proportional to 18,630.44, 25,718.54 and 12,508.43 is: 17,267.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,630.44 : 25,718.54 = 12,508.43 : x
  2. Step 2: Convert to fraction form
    18,630.44/25,718.54 = 12,508.43/x
  3. Step 3: Cross multiply
    18,630.44x = 25,718.54 × 12,508.43
  4. Step 4: Simplify right side
    18,630.44x = 321,698,559.05
  5. Step 5: Solve for x
    x = 321,698,559.05/18,630.44
  6. Step 6: Final answer
    x = 17,267.37

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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.