Home / 13,887.06-20,832.42-5,128.14

Finding the Fourth Proportional to 13,887.06, 20,832.42 and 5,128.14

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Solution

The fourth proportional to 13,887.06, 20,832.42 and 5,128.14 is: 7,692.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,887.06 : 20,832.42 = 5,128.14 : x
  2. Step 2: Convert to fraction form
    13,887.06/20,832.42 = 5,128.14/x
  3. Step 3: Cross multiply
    13,887.06x = 20,832.42 × 5,128.14
  4. Step 4: Simplify right side
    13,887.06x = 106,831,566.30
  5. Step 5: Solve for x
    x = 106,831,566.30/13,887.06
  6. Step 6: Final answer
    x = 7,692.89

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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.