Home / 21,326.40-29,429.82-11,894.76

Finding the Fourth Proportional to 21,326.40, 29,429.82 and 11,894.76

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Solution

The fourth proportional to 21,326.40, 29,429.82 and 11,894.76 is: 16,414.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,326.40 : 29,429.82 = 11,894.76 : x
  2. Step 2: Convert to fraction form
    21,326.40/29,429.82 = 11,894.76/x
  3. Step 3: Cross multiply
    21,326.40x = 29,429.82 × 11,894.76
  4. Step 4: Simplify right side
    21,326.40x = 350,060,645.74
  5. Step 5: Solve for x
    x = 350,060,645.74/21,326.40
  6. Step 6: Final answer
    x = 16,414.43

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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.