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Finding the Fourth Proportional to 18,603.54, 25,658.02 and 12,236.66

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Solution

The fourth proportional to 18,603.54, 25,658.02 and 12,236.66 is: 16,876.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,603.54 : 25,658.02 = 12,236.66 : x
  2. Step 2: Convert to fraction form
    18,603.54/25,658.02 = 12,236.66/x
  3. Step 3: Cross multiply
    18,603.54x = 25,658.02 × 12,236.66
  4. Step 4: Simplify right side
    18,603.54x = 313,968,405.83
  5. Step 5: Solve for x
    x = 313,968,405.83/18,603.54
  6. Step 6: Final answer
    x = 16,876.81

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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.