Home / 18,406.09-25,396.90-11,692.81

Finding the Fourth Proportional to 18,406.09, 25,396.90 and 11,692.81

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Solution

The fourth proportional to 18,406.09, 25,396.90 and 11,692.81 is: 16,133.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,406.09 : 25,396.90 = 11,692.81 : x
  2. Step 2: Convert to fraction form
    18,406.09/25,396.90 = 11,692.81/x
  3. Step 3: Cross multiply
    18,406.09x = 25,396.90 × 11,692.81
  4. Step 4: Simplify right side
    18,406.09x = 296,961,126.29
  5. Step 5: Solve for x
    x = 296,961,126.29/18,406.09
  6. Step 6: Final answer
    x = 16,133.85

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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.