Home / 21,514.37-29,690.21-11,955.14

Finding the Fourth Proportional to 21,514.37, 29,690.21 and 11,955.14

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Solution

The fourth proportional to 21,514.37, 29,690.21 and 11,955.14 is: 16,498.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,514.37 : 29,690.21 = 11,955.14 : x
  2. Step 2: Convert to fraction form
    21,514.37/29,690.21 = 11,955.14/x
  3. Step 3: Cross multiply
    21,514.37x = 29,690.21 × 11,955.14
  4. Step 4: Simplify right side
    21,514.37x = 354,950,408.95
  5. Step 5: Solve for x
    x = 354,950,408.95/21,514.37
  6. Step 6: Final answer
    x = 16,498.30

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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.