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Finding the Fourth Proportional to 20,539.10, 30,808.65 and 8,059.70

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Solution

The fourth proportional to 20,539.10, 30,808.65 and 8,059.70 is: 12,089.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,539.10 : 30,808.65 = 8,059.70 : x
  2. Step 2: Convert to fraction form
    20,539.10/30,808.65 = 8,059.70/x
  3. Step 3: Cross multiply
    20,539.10x = 30,808.65 × 8,059.70
  4. Step 4: Simplify right side
    20,539.10x = 248,308,476.41
  5. Step 5: Solve for x
    x = 248,308,476.41/20,539.10
  6. Step 6: Final answer
    x = 12,089.55

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Similar ratio
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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.