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Finding the Fourth Proportional to 20,536.94, 30,786.68 and 7,386.29

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Solution

The fourth proportional to 20,536.94, 30,786.68 and 7,386.29 is: 11,072.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,536.94 : 30,786.68 = 7,386.29 : x
  2. Step 2: Convert to fraction form
    20,536.94/30,786.68 = 7,386.29/x
  3. Step 3: Cross multiply
    20,536.94x = 30,786.68 × 7,386.29
  4. Step 4: Simplify right side
    20,536.94x = 227,399,326.60
  5. Step 5: Solve for x
    x = 227,399,326.60/20,536.94
  6. Step 6: Final answer
    x = 11,072.70

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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.