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Finding the Fourth Proportional to 20,596.57, 30,870.99 and 9,479.92

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Solution

The fourth proportional to 20,596.57, 30,870.99 and 9,479.92 is: 14,208.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,596.57 : 30,870.99 = 9,479.92 : x
  2. Step 2: Convert to fraction form
    20,596.57/30,870.99 = 9,479.92/x
  3. Step 3: Cross multiply
    20,596.57x = 30,870.99 × 9,479.92
  4. Step 4: Simplify right side
    20,596.57x = 292,654,515.52
  5. Step 5: Solve for x
    x = 292,654,515.52/20,596.57
  6. Step 6: Final answer
    x = 14,208.90

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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.