Home / 21,514.12-29,689.86-11,954.89

Finding the Fourth Proportional to 21,514.12, 29,689.86 and 11,954.89

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Solution

The fourth proportional to 21,514.12, 29,689.86 and 11,954.89 is: 16,497.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,514.12 : 29,689.86 = 11,954.89 : x
  2. Step 2: Convert to fraction form
    21,514.12/29,689.86 = 11,954.89/x
  3. Step 3: Cross multiply
    21,514.12x = 29,689.86 × 11,954.89
  4. Step 4: Simplify right side
    21,514.12x = 354,938,861.97
  5. Step 5: Solve for x
    x = 354,938,861.97/21,514.12
  6. Step 6: Final answer
    x = 16,497.95

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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.