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Finding the Fourth Proportional to 18,636.17, 27,934.80 and 7,550.51

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Solution

The fourth proportional to 18,636.17, 27,934.80 and 7,550.51 is: 11,317.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,636.17 : 27,934.80 = 7,550.51 : x
  2. Step 2: Convert to fraction form
    18,636.17/27,934.80 = 7,550.51/x
  3. Step 3: Cross multiply
    18,636.17x = 27,934.80 × 7,550.51
  4. Step 4: Simplify right side
    18,636.17x = 210,921,986.75
  5. Step 5: Solve for x
    x = 210,921,986.75/18,636.17
  6. Step 6: Final answer
    x = 11,317.88

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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.