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Finding the Fourth Proportional to 27,999.81, 38,627.91 and 18,551.97

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Solution

The fourth proportional to 27,999.81, 38,627.91 and 18,551.97 is: 25,593.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,999.81 : 38,627.91 = 18,551.97 : x
  2. Step 2: Convert to fraction form
    27,999.81/38,627.91 = 18,551.97/x
  3. Step 3: Cross multiply
    27,999.81x = 38,627.91 × 18,551.97
  4. Step 4: Simplify right side
    27,999.81x = 716,623,827.48
  5. Step 5: Solve for x
    x = 716,623,827.48/27,999.81
  6. Step 6: Final answer
    x = 25,593.88

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1.5x scale

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.