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Finding the Fourth Proportional to 18,954.27, 28,399.95 and 11,536.29

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Solution

The fourth proportional to 18,954.27, 28,399.95 and 11,536.29 is: 17,285.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,954.27 : 28,399.95 = 11,536.29 : x
  2. Step 2: Convert to fraction form
    18,954.27/28,399.95 = 11,536.29/x
  3. Step 3: Cross multiply
    18,954.27x = 28,399.95 × 11,536.29
  4. Step 4: Simplify right side
    18,954.27x = 327,630,059.19
  5. Step 5: Solve for x
    x = 327,630,059.19/18,954.27
  6. Step 6: Final answer
    x = 17,285.29

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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.