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Finding the Fourth Proportional to 13,012.36, 17,956.92 and 7,043.92

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Solution

The fourth proportional to 13,012.36, 17,956.92 and 7,043.92 is: 9,720.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,012.36 : 17,956.92 = 7,043.92 : x
  2. Step 2: Convert to fraction form
    13,012.36/17,956.92 = 7,043.92/x
  3. Step 3: Cross multiply
    13,012.36x = 17,956.92 × 7,043.92
  4. Step 4: Simplify right side
    13,012.36x = 126,487,107.93
  5. Step 5: Solve for x
    x = 126,487,107.93/13,012.36
  6. Step 6: Final answer
    x = 9,720.54

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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.