Home / 21,377.88-29,514.24-13,426.92

Finding the Fourth Proportional to 21,377.88, 29,514.24 and 13,426.92

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Solution

The fourth proportional to 21,377.88, 29,514.24 and 13,426.92 is: 18,537.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,377.88 : 29,514.24 = 13,426.92 : x
  2. Step 2: Convert to fraction form
    21,377.88/29,514.24 = 13,426.92/x
  3. Step 3: Cross multiply
    21,377.88x = 29,514.24 × 13,426.92
  4. Step 4: Simplify right side
    21,377.88x = 396,285,339.34
  5. Step 5: Solve for x
    x = 396,285,339.34/21,377.88
  6. Step 6: Final answer
    x = 18,537.17

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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.