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Finding the Fourth Proportional to 20,362.59, 30,541.05 and 5,572.80

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Solution

The fourth proportional to 20,362.59, 30,541.05 and 5,572.80 is: 8,358.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,362.59 : 30,541.05 = 5,572.80 : x
  2. Step 2: Convert to fraction form
    20,362.59/30,541.05 = 5,572.80/x
  3. Step 3: Cross multiply
    20,362.59x = 30,541.05 × 5,572.80
  4. Step 4: Simplify right side
    20,362.59x = 170,199,163.44
  5. Step 5: Solve for x
    x = 170,199,163.44/20,362.59
  6. Step 6: Final answer
    x = 8,358.42

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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.