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Finding the Fourth Proportional to 20,636.79, 30,927.47 and 11,262.77

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Solution

The fourth proportional to 20,636.79, 30,927.47 and 11,262.77 is: 16,879.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,636.79 : 30,927.47 = 11,262.77 : x
  2. Step 2: Convert to fraction form
    20,636.79/30,927.47 = 11,262.77/x
  3. Step 3: Cross multiply
    20,636.79x = 30,927.47 × 11,262.77
  4. Step 4: Simplify right side
    20,636.79x = 348,328,770.34
  5. Step 5: Solve for x
    x = 348,328,770.34/20,636.79
  6. Step 6: Final answer
    x = 16,879.02

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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.