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Finding the Fourth Proportional to 36,658.49, 54,976.76 and 19,118.75

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Solution

The fourth proportional to 36,658.49, 54,976.76 and 19,118.75 is: 28,672.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,658.49 : 54,976.76 = 19,118.75 : x
  2. Step 2: Convert to fraction form
    36,658.49/54,976.76 = 19,118.75/x
  3. Step 3: Cross multiply
    36,658.49x = 54,976.76 × 19,118.75
  4. Step 4: Simplify right side
    36,658.49x = 1,051,086,930.25
  5. Step 5: Solve for x
    x = 1,051,086,930.25/36,658.49
  6. Step 6: Final answer
    x = 28,672.40

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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.