Home / 21,079.91-29,089.93-11,519.59

Finding the Fourth Proportional to 21,079.91, 29,089.93 and 11,519.59

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Solution

The fourth proportional to 21,079.91, 29,089.93 and 11,519.59 is: 15,896.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.91 : 29,089.93 = 11,519.59 : x
  2. Step 2: Convert to fraction form
    21,079.91/29,089.93 = 11,519.59/x
  3. Step 3: Cross multiply
    21,079.91x = 29,089.93 × 11,519.59
  4. Step 4: Simplify right side
    21,079.91x = 335,104,066.73
  5. Step 5: Solve for x
    x = 335,104,066.73/21,079.91
  6. Step 6: Final answer
    x = 15,896.85

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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.