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Finding the Fourth Proportional to 27,750.76, 38,270.48 and 18,187.16

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Solution

The fourth proportional to 27,750.76, 38,270.48 and 18,187.16 is: 25,081.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,750.76 : 38,270.48 = 18,187.16 : x
  2. Step 2: Convert to fraction form
    27,750.76/38,270.48 = 18,187.16/x
  3. Step 3: Cross multiply
    27,750.76x = 38,270.48 × 18,187.16
  4. Step 4: Simplify right side
    27,750.76x = 696,031,317.93
  5. Step 5: Solve for x
    x = 696,031,317.93/27,750.76
  6. Step 6: Final answer
    x = 25,081.53

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.