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Finding the Fourth Proportional to 27,712.62, 41,568.95 and 7,721.31

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Solution

The fourth proportional to 27,712.62, 41,568.95 and 7,721.31 is: 11,581.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,712.62 : 41,568.95 = 7,721.31 : x
  2. Step 2: Convert to fraction form
    27,712.62/41,568.95 = 7,721.31/x
  3. Step 3: Cross multiply
    27,712.62x = 41,568.95 × 7,721.31
  4. Step 4: Simplify right side
    27,712.62x = 320,966,710.72
  5. Step 5: Solve for x
    x = 320,966,710.72/27,712.62
  6. Step 6: Final answer
    x = 11,581.97

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1.5x scale

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.