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Finding the Fourth Proportional to 17,968.16, 26,963.76 and 8,729.12

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Solution

The fourth proportional to 17,968.16, 26,963.76 and 8,729.12 is: 13,099.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,968.16 : 26,963.76 = 8,729.12 : x
  2. Step 2: Convert to fraction form
    17,968.16/26,963.76 = 8,729.12/x
  3. Step 3: Cross multiply
    17,968.16x = 26,963.76 × 8,729.12
  4. Step 4: Simplify right side
    17,968.16x = 235,369,896.69
  5. Step 5: Solve for x
    x = 235,369,896.69/17,968.16
  6. Step 6: Final answer
    x = 13,099.28

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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.