Home / 21,051.28-29,049.78-12,092.48

Finding the Fourth Proportional to 21,051.28, 29,049.78 and 12,092.48

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Solution

The fourth proportional to 21,051.28, 29,049.78 and 12,092.48 is: 16,687.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,051.28 : 29,049.78 = 12,092.48 : x
  2. Step 2: Convert to fraction form
    21,051.28/29,049.78 = 12,092.48/x
  3. Step 3: Cross multiply
    21,051.28x = 29,049.78 × 12,092.48
  4. Step 4: Simplify right side
    21,051.28x = 351,283,883.65
  5. Step 5: Solve for x
    x = 351,283,883.65/21,051.28
  6. Step 6: Final answer
    x = 16,687.06

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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.