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Finding the Fourth Proportional to 55,221.86, 82,832.79 and 13,668.86

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Solution

The fourth proportional to 55,221.86, 82,832.79 and 13,668.86 is: 20,503.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,221.86 : 82,832.79 = 13,668.86 : x
  2. Step 2: Convert to fraction form
    55,221.86/82,832.79 = 13,668.86/x
  3. Step 3: Cross multiply
    55,221.86x = 82,832.79 × 13,668.86
  4. Step 4: Simplify right side
    55,221.86x = 1,132,229,395.76
  5. Step 5: Solve for x
    x = 1,132,229,395.76/55,221.86
  6. Step 6: Final answer
    x = 20,503.28

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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.