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Finding the Fourth Proportional to 20,601.83, 30,903.95 and 7,951.65

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Solution

The fourth proportional to 20,601.83, 30,903.95 and 7,951.65 is: 11,927.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,601.83 : 30,903.95 = 7,951.65 : x
  2. Step 2: Convert to fraction form
    20,601.83/30,903.95 = 7,951.65/x
  3. Step 3: Cross multiply
    20,601.83x = 30,903.95 × 7,951.65
  4. Step 4: Simplify right side
    20,601.83x = 245,737,394.02
  5. Step 5: Solve for x
    x = 245,737,394.02/20,601.83
  6. Step 6: Final answer
    x = 11,927.94

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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.