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Finding the Fourth Proportional to 18,969.92, 26,180.96 and 13,682.24

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Solution

The fourth proportional to 18,969.92, 26,180.96 and 13,682.24 is: 18,883.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,969.92 : 26,180.96 = 13,682.24 : x
  2. Step 2: Convert to fraction form
    18,969.92/26,180.96 = 13,682.24/x
  3. Step 3: Cross multiply
    18,969.92x = 26,180.96 × 13,682.24
  4. Step 4: Simplify right side
    18,969.92x = 358,214,178.15
  5. Step 5: Solve for x
    x = 358,214,178.15/18,969.92
  6. Step 6: Final answer
    x = 18,883.27

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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.