Home / 21,396.96-29,529.36-11,968.56

Finding the Fourth Proportional to 21,396.96, 29,529.36 and 11,968.56

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Solution

The fourth proportional to 21,396.96, 29,529.36 and 11,968.56 is: 16,517.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,396.96 : 29,529.36 = 11,968.56 : x
  2. Step 2: Convert to fraction form
    21,396.96/29,529.36 = 11,968.56/x
  3. Step 3: Cross multiply
    21,396.96x = 29,529.36 × 11,968.56
  4. Step 4: Simplify right side
    21,396.96x = 353,423,916.92
  5. Step 5: Solve for x
    x = 353,423,916.92/21,396.96
  6. Step 6: Final answer
    x = 16,517.48

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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.