Home / 13,911.21-20,857.56-7,231.30

Finding the Fourth Proportional to 13,911.21, 20,857.56 and 7,231.30

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Solution

The fourth proportional to 13,911.21, 20,857.56 and 7,231.30 is: 10,842.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,911.21 : 20,857.56 = 7,231.30 : x
  2. Step 2: Convert to fraction form
    13,911.21/20,857.56 = 7,231.30/x
  3. Step 3: Cross multiply
    13,911.21x = 20,857.56 × 7,231.30
  4. Step 4: Simplify right side
    13,911.21x = 150,827,194.37
  5. Step 5: Solve for x
    x = 150,827,194.37/13,911.21
  6. Step 6: Final answer
    x = 10,842.13

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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.