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Finding the Fourth Proportional to 12,613.08, 18,901.90 and 9,968.96

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Solution

The fourth proportional to 12,613.08, 18,901.90 and 9,968.96 is: 14,939.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,613.08 : 18,901.90 = 9,968.96 : x
  2. Step 2: Convert to fraction form
    12,613.08/18,901.90 = 9,968.96/x
  3. Step 3: Cross multiply
    12,613.08x = 18,901.90 × 9,968.96
  4. Step 4: Simplify right side
    12,613.08x = 188,432,285.02
  5. Step 5: Solve for x
    x = 188,432,285.02/12,613.08
  6. Step 6: Final answer
    x = 14,939.43

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1.5x scale

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.