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Finding the Fourth Proportional to 27,656, 38,164 and 15,080.64

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Solution

The fourth proportional to 27,656, 38,164 and 15,080.64 is: 20,810.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,656 : 38,164 = 15,080.64 : x
  2. Step 2: Convert to fraction form
    27,656/38,164 = 15,080.64/x
  3. Step 3: Cross multiply
    27,656x = 38,164 × 15,080.64
  4. Step 4: Simplify right side
    27,656x = 575,537,544.96
  5. Step 5: Solve for x
    x = 575,537,544.96/27,656
  6. Step 6: Final answer
    x = 20,810.59

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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.