Home / 20,745.52-28,628.58-11,313.88

Finding the Fourth Proportional to 20,745.52, 28,628.58 and 11,313.88

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Solution

The fourth proportional to 20,745.52, 28,628.58 and 11,313.88 is: 15,613.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.52 : 28,628.58 = 11,313.88 : x
  2. Step 2: Convert to fraction form
    20,745.52/28,628.58 = 11,313.88/x
  3. Step 3: Cross multiply
    20,745.52x = 28,628.58 × 11,313.88
  4. Step 4: Simplify right side
    20,745.52x = 323,900,318.69
  5. Step 5: Solve for x
    x = 323,900,318.69/20,745.52
  6. Step 6: Final answer
    x = 15,613.02

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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.