Home / 21,270.63-29,304.33-15,291.96

Finding the Fourth Proportional to 21,270.63, 29,304.33 and 15,291.96

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Solution

The fourth proportional to 21,270.63, 29,304.33 and 15,291.96 is: 21,067.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.63 : 29,304.33 = 15,291.96 : x
  2. Step 2: Convert to fraction form
    21,270.63/29,304.33 = 15,291.96/x
  3. Step 3: Cross multiply
    21,270.63x = 29,304.33 × 15,291.96
  4. Step 4: Simplify right side
    21,270.63x = 448,120,642.19
  5. Step 5: Solve for x
    x = 448,120,642.19/21,270.63
  6. Step 6: Final answer
    x = 21,067.58

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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.