Home / 20,115.26-30,171.64-9,018.96

Finding the Fourth Proportional to 20,115.26, 30,171.64 and 9,018.96

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Solution

The fourth proportional to 20,115.26, 30,171.64 and 9,018.96 is: 13,527.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115.26 : 30,171.64 = 9,018.96 : x
  2. Step 2: Convert to fraction form
    20,115.26/30,171.64 = 9,018.96/x
  3. Step 3: Cross multiply
    20,115.26x = 30,171.64 × 9,018.96
  4. Step 4: Simplify right side
    20,115.26x = 272,116,814.29
  5. Step 5: Solve for x
    x = 272,116,814.29/20,115.26
  6. Step 6: Final answer
    x = 13,527.88

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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.