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Finding the Fourth Proportional to 20,636.17, 30,905.04 and 11,262.14

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Solution

The fourth proportional to 20,636.17, 30,905.04 and 11,262.14 is: 16,866.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.17 : 30,905.04 = 11,262.14 : x
  2. Step 2: Convert to fraction form
    20,636.17/30,905.04 = 11,262.14/x
  3. Step 3: Cross multiply
    20,636.17x = 30,905.04 × 11,262.14
  4. Step 4: Simplify right side
    20,636.17x = 348,056,890.79
  5. Step 5: Solve for x
    x = 348,056,890.79/20,636.17
  6. Step 6: Final answer
    x = 16,866.35

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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.