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Finding the Fourth Proportional to 36,354.92, 54,509.64 and 12,656.84

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Solution

The fourth proportional to 36,354.92, 54,509.64 and 12,656.84 is: 18,977.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,354.92 : 54,509.64 = 12,656.84 : x
  2. Step 2: Convert to fraction form
    36,354.92/54,509.64 = 12,656.84/x
  3. Step 3: Cross multiply
    36,354.92x = 54,509.64 × 12,656.84
  4. Step 4: Simplify right side
    36,354.92x = 689,919,791.94
  5. Step 5: Solve for x
    x = 689,919,791.94/36,354.92
  6. Step 6: Final answer
    x = 18,977.34

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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.