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Finding the Fourth Proportional to 27,888.11, 38,485.48 and 15,951.43

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Solution

The fourth proportional to 27,888.11, 38,485.48 and 15,951.43 is: 22,012.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,888.11 : 38,485.48 = 15,951.43 : x
  2. Step 2: Convert to fraction form
    27,888.11/38,485.48 = 15,951.43/x
  3. Step 3: Cross multiply
    27,888.11x = 38,485.48 × 15,951.43
  4. Step 4: Simplify right side
    27,888.11x = 613,898,440.24
  5. Step 5: Solve for x
    x = 613,898,440.24/27,888.11
  6. Step 6: Final answer
    x = 22,012.91

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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.