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Finding the Fourth Proportional to 20,652.94, 30,979.50 and 8,804.98

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Solution

The fourth proportional to 20,652.94, 30,979.50 and 8,804.98 is: 13,207.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,652.94 : 30,979.50 = 8,804.98 : x
  2. Step 2: Convert to fraction form
    20,652.94/30,979.50 = 8,804.98/x
  3. Step 3: Cross multiply
    20,652.94x = 30,979.50 × 8,804.98
  4. Step 4: Simplify right side
    20,652.94x = 272,773,877.91
  5. Step 5: Solve for x
    x = 272,773,877.91/20,652.94
  6. Step 6: Final answer
    x = 13,207.51

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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.