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Finding the Fourth Proportional to 17,781.78, 26,674.03 and 5,300.85

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Solution

The fourth proportional to 17,781.78, 26,674.03 and 5,300.85 is: 7,951.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,781.78 : 26,674.03 = 5,300.85 : x
  2. Step 2: Convert to fraction form
    17,781.78/26,674.03 = 5,300.85/x
  3. Step 3: Cross multiply
    17,781.78x = 26,674.03 × 5,300.85
  4. Step 4: Simplify right side
    17,781.78x = 141,395,031.93
  5. Step 5: Solve for x
    x = 141,395,031.93/17,781.78
  6. Step 6: Final answer
    x = 7,951.68

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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.