Home / 21,392.25-29,521.38-11,960.79

Finding the Fourth Proportional to 21,392.25, 29,521.38 and 11,960.79

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Solution

The fourth proportional to 21,392.25, 29,521.38 and 11,960.79 is: 16,505.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,392.25 : 29,521.38 = 11,960.79 : x
  2. Step 2: Convert to fraction form
    21,392.25/29,521.38 = 11,960.79/x
  3. Step 3: Cross multiply
    21,392.25x = 29,521.38 × 11,960.79
  4. Step 4: Simplify right side
    21,392.25x = 353,099,026.69
  5. Step 5: Solve for x
    x = 353,099,026.69/21,392.25
  6. Step 6: Final answer
    x = 16,505.93

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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.