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Finding the Fourth Proportional to 9,396.80, 12,941.28 and 9,192.72

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Solution

The fourth proportional to 9,396.80, 12,941.28 and 9,192.72 is: 12,660.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,396.80 : 12,941.28 = 9,192.72 : x
  2. Step 2: Convert to fraction form
    9,396.80/12,941.28 = 9,192.72/x
  3. Step 3: Cross multiply
    9,396.80x = 12,941.28 × 9,192.72
  4. Step 4: Simplify right side
    9,396.80x = 118,965,563.48
  5. Step 5: Solve for x
    x = 118,965,563.48/9,396.80
  6. Step 6: Final answer
    x = 12,660.22

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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.