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Finding the Fourth Proportional to 18,635.50, 25,703.97 and 12,260.08

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Solution

The fourth proportional to 18,635.50, 25,703.97 and 12,260.08 is: 16,910.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,635.50 : 25,703.97 = 12,260.08 : x
  2. Step 2: Convert to fraction form
    18,635.50/25,703.97 = 12,260.08/x
  3. Step 3: Cross multiply
    18,635.50x = 25,703.97 × 12,260.08
  4. Step 4: Simplify right side
    18,635.50x = 315,132,728.52
  5. Step 5: Solve for x
    x = 315,132,728.52/18,635.50
  6. Step 6: Final answer
    x = 16,910.34

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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.