Home / 20,827.88-28,743.06-11,397.08

Finding the Fourth Proportional to 20,827.88, 28,743.06 and 11,397.08

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Solution

The fourth proportional to 20,827.88, 28,743.06 and 11,397.08 is: 15,728.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,827.88 : 28,743.06 = 11,397.08 : x
  2. Step 2: Convert to fraction form
    20,827.88/28,743.06 = 11,397.08/x
  3. Step 3: Cross multiply
    20,827.88x = 28,743.06 × 11,397.08
  4. Step 4: Simplify right side
    20,827.88x = 327,586,954.26
  5. Step 5: Solve for x
    x = 327,586,954.26/20,827.88
  6. Step 6: Final answer
    x = 15,728.29

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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.