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Finding the Fourth Proportional to 20,605.29, 30,852.54 and 16,951.62

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Solution

The fourth proportional to 20,605.29, 30,852.54 and 16,951.62 is: 25,381.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,605.29 : 30,852.54 = 16,951.62 : x
  2. Step 2: Convert to fraction form
    20,605.29/30,852.54 = 16,951.62/x
  3. Step 3: Cross multiply
    20,605.29x = 30,852.54 × 16,951.62
  4. Step 4: Simplify right side
    20,605.29x = 523,000,534.11
  5. Step 5: Solve for x
    x = 523,000,534.11/20,605.29
  6. Step 6: Final answer
    x = 25,381.86

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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.