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Finding the Fourth Proportional to 36,404.90, 54,564.15 and 18,865.70

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Solution

The fourth proportional to 36,404.90, 54,564.15 and 18,865.70 is: 28,276.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,404.90 : 54,564.15 = 18,865.70 : x
  2. Step 2: Convert to fraction form
    36,404.90/54,564.15 = 18,865.70/x
  3. Step 3: Cross multiply
    36,404.90x = 54,564.15 × 18,865.70
  4. Step 4: Simplify right side
    36,404.90x = 1,029,390,884.66
  5. Step 5: Solve for x
    x = 1,029,390,884.66/36,404.90
  6. Step 6: Final answer
    x = 28,276.16

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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.