Home / 21,414.90-29,551.58-11,855.14

Finding the Fourth Proportional to 21,414.90, 29,551.58 and 11,855.14

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Solution

The fourth proportional to 21,414.90, 29,551.58 and 11,855.14 is: 16,359.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,414.90 : 29,551.58 = 11,855.14 : x
  2. Step 2: Convert to fraction form
    21,414.90/29,551.58 = 11,855.14/x
  3. Step 3: Cross multiply
    21,414.90x = 29,551.58 × 11,855.14
  4. Step 4: Simplify right side
    21,414.90x = 350,338,118.12
  5. Step 5: Solve for x
    x = 350,338,118.12/21,414.90
  6. Step 6: Final answer
    x = 16,359.55

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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.