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Finding the Fourth Proportional to 36,561.25, 54,841.88 and 13,187.69

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Solution

The fourth proportional to 36,561.25, 54,841.88 and 13,187.69 is: 19,781.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,561.25 : 54,841.88 = 13,187.69 : x
  2. Step 2: Convert to fraction form
    36,561.25/54,841.88 = 13,187.69/x
  3. Step 3: Cross multiply
    36,561.25x = 54,841.88 × 13,187.69
  4. Step 4: Simplify right side
    36,561.25x = 723,237,471.22
  5. Step 5: Solve for x
    x = 723,237,471.22/36,561.25
  6. Step 6: Final answer
    x = 19,781.53

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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.