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Finding the Fourth Proportional to 12,857.48, 17,735.94 and 7,551.32

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Solution

The fourth proportional to 12,857.48, 17,735.94 and 7,551.32 is: 10,416.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,857.48 : 17,735.94 = 7,551.32 : x
  2. Step 2: Convert to fraction form
    12,857.48/17,735.94 = 7,551.32/x
  3. Step 3: Cross multiply
    12,857.48x = 17,735.94 × 7,551.32
  4. Step 4: Simplify right side
    12,857.48x = 133,929,758.44
  5. Step 5: Solve for x
    x = 133,929,758.44/12,857.48
  6. Step 6: Final answer
    x = 10,416.49

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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.