Home / 20,246.81-27,939.24-12,692.84

Finding the Fourth Proportional to 20,246.81, 27,939.24 and 12,692.84

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Solution

The fourth proportional to 20,246.81, 27,939.24 and 12,692.84 is: 17,515.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,246.81 : 27,939.24 = 12,692.84 : x
  2. Step 2: Convert to fraction form
    20,246.81/27,939.24 = 12,692.84/x
  3. Step 3: Cross multiply
    20,246.81x = 27,939.24 × 12,692.84
  4. Step 4: Simplify right side
    20,246.81x = 354,628,163.35
  5. Step 5: Solve for x
    x = 354,628,163.35/20,246.81
  6. Step 6: Final answer
    x = 17,515.27

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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.