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Finding the Fourth Proportional to 20,486.95, 30,733.66 and 7,339.03

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Solution

The fourth proportional to 20,486.95, 30,733.66 and 7,339.03 is: 11,009.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,486.95 : 30,733.66 = 7,339.03 : x
  2. Step 2: Convert to fraction form
    20,486.95/30,733.66 = 7,339.03/x
  3. Step 3: Cross multiply
    20,486.95x = 30,733.66 × 7,339.03
  4. Step 4: Simplify right side
    20,486.95x = 225,555,252.75
  5. Step 5: Solve for x
    x = 225,555,252.75/20,486.95
  6. Step 6: Final answer
    x = 11,009.70

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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.