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Finding the Fourth Proportional to 18,617.63, 27,920.48 and 6,134.85

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Solution

The fourth proportional to 18,617.63, 27,920.48 and 6,134.85 is: 9,200.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,617.63 : 27,920.48 = 6,134.85 : x
  2. Step 2: Convert to fraction form
    18,617.63/27,920.48 = 6,134.85/x
  3. Step 3: Cross multiply
    18,617.63x = 27,920.48 × 6,134.85
  4. Step 4: Simplify right side
    18,617.63x = 171,287,926.05
  5. Step 5: Solve for x
    x = 171,287,926.05/18,617.63
  6. Step 6: Final answer
    x = 9,200.31

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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.