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Finding the Fourth Proportional to 12,954.48, 17,885.79 and 9,965.04

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Solution

The fourth proportional to 12,954.48, 17,885.79 and 9,965.04 is: 13,758.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,954.48 : 17,885.79 = 9,965.04 : x
  2. Step 2: Convert to fraction form
    12,954.48/17,885.79 = 9,965.04/x
  3. Step 3: Cross multiply
    12,954.48x = 17,885.79 × 9,965.04
  4. Step 4: Simplify right side
    12,954.48x = 178,232,612.78
  5. Step 5: Solve for x
    x = 178,232,612.78/12,954.48
  6. Step 6: Final answer
    x = 13,758.38

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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.