Home / 13,153.80-19,692.30-11,771.40

Finding the Fourth Proportional to 13,153.80, 19,692.30 and 11,771.40

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Solution

The fourth proportional to 13,153.80, 19,692.30 and 11,771.40 is: 17,622.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,153.80 : 19,692.30 = 11,771.40 : x
  2. Step 2: Convert to fraction form
    13,153.80/19,692.30 = 11,771.40/x
  3. Step 3: Cross multiply
    13,153.80x = 19,692.30 × 11,771.40
  4. Step 4: Simplify right side
    13,153.80x = 231,805,940.22
  5. Step 5: Solve for x
    x = 231,805,940.22/13,153.80
  6. Step 6: Final answer
    x = 17,622.74

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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.