Home / 12,456.41-18,684.81-3,692.21

Finding the Fourth Proportional to 12,456.41, 18,684.81 and 3,692.21

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Solution

The fourth proportional to 12,456.41, 18,684.81 and 3,692.21 is: 5,538.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456.41 : 18,684.81 = 3,692.21 : x
  2. Step 2: Convert to fraction form
    12,456.41/18,684.81 = 3,692.21/x
  3. Step 3: Cross multiply
    12,456.41x = 18,684.81 × 3,692.21
  4. Step 4: Simplify right side
    12,456.41x = 68,988,148.91
  5. Step 5: Solve for x
    x = 68,988,148.91/12,456.41
  6. Step 6: Final answer
    x = 5,538.37

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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.