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Finding the Fourth Proportional to 35,143.60, 52,722.60 and 11,786.80

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Solution

The fourth proportional to 35,143.60, 52,722.60 and 11,786.80 is: 17,682.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,143.60 : 52,722.60 = 11,786.80 : x
  2. Step 2: Convert to fraction form
    35,143.60/52,722.60 = 11,786.80/x
  3. Step 3: Cross multiply
    35,143.60x = 52,722.60 × 11,786.80
  4. Step 4: Simplify right side
    35,143.60x = 621,430,741.68
  5. Step 5: Solve for x
    x = 621,430,741.68/35,143.60
  6. Step 6: Final answer
    x = 17,682.61

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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.