Home / 13,757.28-20,615.69-8,129.16

Finding the Fourth Proportional to 13,757.28, 20,615.69 and 8,129.16

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Solution

The fourth proportional to 13,757.28, 20,615.69 and 8,129.16 is: 12,181.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,757.28 : 20,615.69 = 8,129.16 : x
  2. Step 2: Convert to fraction form
    13,757.28/20,615.69 = 8,129.16/x
  3. Step 3: Cross multiply
    13,757.28x = 20,615.69 × 8,129.16
  4. Step 4: Simplify right side
    13,757.28x = 167,588,242.52
  5. Step 5: Solve for x
    x = 167,588,242.52/13,757.28
  6. Step 6: Final answer
    x = 12,181.79

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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.