Home / 13,128.20-19,692.30-11,832.20

Finding the Fourth Proportional to 13,128.20, 19,692.30 and 11,832.20

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Solution

The fourth proportional to 13,128.20, 19,692.30 and 11,832.20 is: 17,748.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,128.20 : 19,692.30 = 11,832.20 : x
  2. Step 2: Convert to fraction form
    13,128.20/19,692.30 = 11,832.20/x
  3. Step 3: Cross multiply
    13,128.20x = 19,692.30 × 11,832.20
  4. Step 4: Simplify right side
    13,128.20x = 233,003,232.06
  5. Step 5: Solve for x
    x = 233,003,232.06/13,128.20
  6. Step 6: Final answer
    x = 17,748.30

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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.