Home / 21,396.84-29,529-11,966.10

Finding the Fourth Proportional to 21,396.84, 29,529 and 11,966.10

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Solution

The fourth proportional to 21,396.84, 29,529 and 11,966.10 is: 16,513.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,396.84 : 29,529 = 11,966.10 : x
  2. Step 2: Convert to fraction form
    21,396.84/29,529 = 11,966.10/x
  3. Step 3: Cross multiply
    21,396.84x = 29,529 × 11,966.10
  4. Step 4: Simplify right side
    21,396.84x = 353,346,966.90
  5. Step 5: Solve for x
    x = 353,346,966.90/21,396.84
  6. Step 6: Final answer
    x = 16,513.98

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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.