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Finding the Fourth Proportional to 20,580.89, 30,853.10 and 8,890.16

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Solution

The fourth proportional to 20,580.89, 30,853.10 and 8,890.16 is: 13,327.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,580.89 : 30,853.10 = 8,890.16 : x
  2. Step 2: Convert to fraction form
    20,580.89/30,853.10 = 8,890.16/x
  3. Step 3: Cross multiply
    20,580.89x = 30,853.10 × 8,890.16
  4. Step 4: Simplify right side
    20,580.89x = 274,288,863.46
  5. Step 5: Solve for x
    x = 274,288,863.46/20,580.89
  6. Step 6: Final answer
    x = 13,327.36

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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.