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Finding the Fourth Proportional to 12,613.58, 18,902.65 and 9,969.46

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Solution

The fourth proportional to 12,613.58, 18,902.65 and 9,969.46 is: 14,940.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,613.58 : 18,902.65 = 9,969.46 : x
  2. Step 2: Convert to fraction form
    12,613.58/18,902.65 = 9,969.46/x
  3. Step 3: Cross multiply
    12,613.58x = 18,902.65 × 9,969.46
  4. Step 4: Simplify right side
    12,613.58x = 188,449,213.07
  5. Step 5: Solve for x
    x = 188,449,213.07/12,613.58
  6. Step 6: Final answer
    x = 14,940.18

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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.