Home / 30,974.45-42,745.25-16,827.30

Finding the Fourth Proportional to 30,974.45, 42,745.25 and 16,827.30

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Solution

The fourth proportional to 30,974.45, 42,745.25 and 16,827.30 is: 23,221.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,974.45 : 42,745.25 = 16,827.30 : x
  2. Step 2: Convert to fraction form
    30,974.45/42,745.25 = 16,827.30/x
  3. Step 3: Cross multiply
    30,974.45x = 42,745.25 × 16,827.30
  4. Step 4: Simplify right side
    30,974.45x = 719,287,187.39
  5. Step 5: Solve for x
    x = 719,287,187.39/30,974.45
  6. Step 6: Final answer
    x = 23,221.96

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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.