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Finding the Fourth Proportional to 20,013, 27,619.56 and 11,631.12

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Solution

The fourth proportional to 20,013, 27,619.56 and 11,631.12 is: 16,051.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,013 : 27,619.56 = 11,631.12 : x
  2. Step 2: Convert to fraction form
    20,013/27,619.56 = 11,631.12/x
  3. Step 3: Cross multiply
    20,013x = 27,619.56 × 11,631.12
  4. Step 4: Simplify right side
    20,013x = 321,246,416.71
  5. Step 5: Solve for x
    x = 321,246,416.71/20,013
  6. Step 6: Final answer
    x = 16,051.89

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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.