Home / 13,929.39-20,874.44-7,692.21

Finding the Fourth Proportional to 13,929.39, 20,874.44 and 7,692.21

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Solution

The fourth proportional to 13,929.39, 20,874.44 and 7,692.21 is: 11,527.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,929.39 : 20,874.44 = 7,692.21 : x
  2. Step 2: Convert to fraction form
    13,929.39/20,874.44 = 7,692.21/x
  3. Step 3: Cross multiply
    13,929.39x = 20,874.44 × 7,692.21
  4. Step 4: Simplify right side
    13,929.39x = 160,570,537.65
  5. Step 5: Solve for x
    x = 160,570,537.65/13,929.39
  6. Step 6: Final answer
    x = 11,527.46

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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.