Home / 20,613.37-28,446.47-11,660.69

Finding the Fourth Proportional to 20,613.37, 28,446.47 and 11,660.69

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Solution

The fourth proportional to 20,613.37, 28,446.47 and 11,660.69 is: 16,091.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,613.37 : 28,446.47 = 11,660.69 : x
  2. Step 2: Convert to fraction form
    20,613.37/28,446.47 = 11,660.69/x
  3. Step 3: Cross multiply
    20,613.37x = 28,446.47 × 11,660.69
  4. Step 4: Simplify right side
    20,613.37x = 331,705,468.26
  5. Step 5: Solve for x
    x = 331,705,468.26/20,613.37
  6. Step 6: Final answer
    x = 16,091.76

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Half scale
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Double scale
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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.