Home / 15,613.38-21,546.36-8,539.92

Finding the Fourth Proportional to 15,613.38, 21,546.36 and 8,539.92

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Solution

The fourth proportional to 15,613.38, 21,546.36 and 8,539.92 is: 11,785.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,613.38 : 21,546.36 = 8,539.92 : x
  2. Step 2: Convert to fraction form
    15,613.38/21,546.36 = 8,539.92/x
  3. Step 3: Cross multiply
    15,613.38x = 21,546.36 × 8,539.92
  4. Step 4: Simplify right side
    15,613.38x = 184,004,190.69
  5. Step 5: Solve for x
    x = 184,004,190.69/15,613.38
  6. Step 6: Final answer
    x = 11,785.03

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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.