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Finding the Fourth Proportional to 13,784, 20,676 and 4,550.72

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Solution

The fourth proportional to 13,784, 20,676 and 4,550.72 is: 6,826.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,784 : 20,676 = 4,550.72 : x
  2. Step 2: Convert to fraction form
    13,784/20,676 = 4,550.72/x
  3. Step 3: Cross multiply
    13,784x = 20,676 × 4,550.72
  4. Step 4: Simplify right side
    13,784x = 94,090,686.72
  5. Step 5: Solve for x
    x = 94,090,686.72/13,784
  6. Step 6: Final answer
    x = 6,826.08

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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.