Home / 20,495.82-28,276.62-13,426.14

Finding the Fourth Proportional to 20,495.82, 28,276.62 and 13,426.14

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Solution

The fourth proportional to 20,495.82, 28,276.62 and 13,426.14 is: 18,523.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,495.82 : 28,276.62 = 13,426.14 : x
  2. Step 2: Convert to fraction form
    20,495.82/28,276.62 = 13,426.14/x
  3. Step 3: Cross multiply
    20,495.82x = 28,276.62 × 13,426.14
  4. Step 4: Simplify right side
    20,495.82x = 379,645,858.85
  5. Step 5: Solve for x
    x = 379,645,858.85/20,495.82
  6. Step 6: Final answer
    x = 18,523.09

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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.