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Finding the Fourth Proportional to 27,995.79, 38,620.58 and 17,916.15

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Solution

The fourth proportional to 27,995.79, 38,620.58 and 17,916.15 is: 24,715.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,995.79 : 38,620.58 = 17,916.15 : x
  2. Step 2: Convert to fraction form
    27,995.79/38,620.58 = 17,916.15/x
  3. Step 3: Cross multiply
    27,995.79x = 38,620.58 × 17,916.15
  4. Step 4: Simplify right side
    27,995.79x = 691,932,104.37
  5. Step 5: Solve for x
    x = 691,932,104.37/27,995.79
  6. Step 6: Final answer
    x = 24,715.58

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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.