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Finding the Fourth Proportional to 20,596.56, 30,870.96 and 9,479.92

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Solution

The fourth proportional to 20,596.56, 30,870.96 and 9,479.92 is: 14,208.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,596.56 : 30,870.96 = 9,479.92 : x
  2. Step 2: Convert to fraction form
    20,596.56/30,870.96 = 9,479.92/x
  3. Step 3: Cross multiply
    20,596.56x = 30,870.96 × 9,479.92
  4. Step 4: Simplify right side
    20,596.56x = 292,654,231.12
  5. Step 5: Solve for x
    x = 292,654,231.12/20,596.56
  6. Step 6: Final answer
    x = 14,208.89

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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.