Home / 13,489.44-18,631.68-10,147.20

Finding the Fourth Proportional to 13,489.44, 18,631.68 and 10,147.20

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Solution

The fourth proportional to 13,489.44, 18,631.68 and 10,147.20 is: 14,015.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,489.44 : 18,631.68 = 10,147.20 : x
  2. Step 2: Convert to fraction form
    13,489.44/18,631.68 = 10,147.20/x
  3. Step 3: Cross multiply
    13,489.44x = 18,631.68 × 10,147.20
  4. Step 4: Simplify right side
    13,489.44x = 189,059,383.30
  5. Step 5: Solve for x
    x = 189,059,383.30/13,489.44
  6. Step 6: Final answer
    x = 14,015.36

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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.