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Finding the Fourth Proportional to 27,781.59, 41,664.98 and 7,789.98

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Solution

The fourth proportional to 27,781.59, 41,664.98 and 7,789.98 is: 11,682.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,781.59 : 41,664.98 = 7,789.98 : x
  2. Step 2: Convert to fraction form
    27,781.59/41,664.98 = 7,789.98/x
  3. Step 3: Cross multiply
    27,781.59x = 41,664.98 × 7,789.98
  4. Step 4: Simplify right side
    27,781.59x = 324,569,113.63
  5. Step 5: Solve for x
    x = 324,569,113.63/27,781.59
  6. Step 6: Final answer
    x = 11,682.89

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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.