Home / 21,514.43-29,681.62-15,862.59

Finding the Fourth Proportional to 21,514.43, 29,681.62 and 15,862.59

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Solution

The fourth proportional to 21,514.43, 29,681.62 and 15,862.59 is: 21,884.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,514.43 : 29,681.62 = 15,862.59 : x
  2. Step 2: Convert to fraction form
    21,514.43/29,681.62 = 15,862.59/x
  3. Step 3: Cross multiply
    21,514.43x = 29,681.62 × 15,862.59
  4. Step 4: Simplify right side
    21,514.43x = 470,827,368.60
  5. Step 5: Solve for x
    x = 470,827,368.60/21,514.43
  6. Step 6: Final answer
    x = 21,884.26

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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.