Home / 21,458.48-29,619.96-13,514

Finding the Fourth Proportional to 21,458.48, 29,619.96 and 13,514

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Solution

The fourth proportional to 21,458.48, 29,619.96 and 13,514 is: 18,653.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,458.48 : 29,619.96 = 13,514 : x
  2. Step 2: Convert to fraction form
    21,458.48/29,619.96 = 13,514/x
  3. Step 3: Cross multiply
    21,458.48x = 29,619.96 × 13,514
  4. Step 4: Simplify right side
    21,458.48x = 400,284,139.44
  5. Step 5: Solve for x
    x = 400,284,139.44/21,458.48
  6. Step 6: Final answer
    x = 18,653.89

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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.