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Finding the Fourth Proportional to 14,986.92, 20,684.01 and 8,699.30

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Solution

The fourth proportional to 14,986.92, 20,684.01 and 8,699.30 is: 12,006.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,986.92 : 20,684.01 = 8,699.30 : x
  2. Step 2: Convert to fraction form
    14,986.92/20,684.01 = 8,699.30/x
  3. Step 3: Cross multiply
    14,986.92x = 20,684.01 × 8,699.30
  4. Step 4: Simplify right side
    14,986.92x = 179,936,304.77
  5. Step 5: Solve for x
    x = 179,936,304.77/14,986.92
  6. Step 6: Final answer
    x = 12,006.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.