Home / 21,074.25-29,079.90-11,642.88

Finding the Fourth Proportional to 21,074.25, 29,079.90 and 11,642.88

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Solution

The fourth proportional to 21,074.25, 29,079.90 and 11,642.88 is: 16,065.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,074.25 : 29,079.90 = 11,642.88 : x
  2. Step 2: Convert to fraction form
    21,074.25/29,079.90 = 11,642.88/x
  3. Step 3: Cross multiply
    21,074.25x = 29,079.90 × 11,642.88
  4. Step 4: Simplify right side
    21,074.25x = 338,573,786.11
  5. Step 5: Solve for x
    x = 338,573,786.11/21,074.25
  6. Step 6: Final answer
    x = 16,065.76

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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.