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Finding the Fourth Proportional to 27,787.82, 41,686.06 and 9,315.50

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Solution

The fourth proportional to 27,787.82, 41,686.06 and 9,315.50 is: 13,974.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,787.82 : 41,686.06 = 9,315.50 : x
  2. Step 2: Convert to fraction form
    27,787.82/41,686.06 = 9,315.50/x
  3. Step 3: Cross multiply
    27,787.82x = 41,686.06 × 9,315.50
  4. Step 4: Simplify right side
    27,787.82x = 388,326,491.93
  5. Step 5: Solve for x
    x = 388,326,491.93/27,787.82
  6. Step 6: Final answer
    x = 13,974.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.