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Finding the Fourth Proportional to 20,567.53, 30,848.53 and 8,725.99

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Solution

The fourth proportional to 20,567.53, 30,848.53 and 8,725.99 is: 13,087.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,567.53 : 30,848.53 = 8,725.99 : x
  2. Step 2: Convert to fraction form
    20,567.53/30,848.53 = 8,725.99/x
  3. Step 3: Cross multiply
    20,567.53x = 30,848.53 × 8,725.99
  4. Step 4: Simplify right side
    20,567.53x = 269,183,964.29
  5. Step 5: Solve for x
    x = 269,183,964.29/20,567.53
  6. Step 6: Final answer
    x = 13,087.81

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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.