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Finding the Fourth Proportional to 12,614.84, 18,930.72 and 4,406.84

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Solution

The fourth proportional to 12,614.84, 18,930.72 and 4,406.84 is: 6,613.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,614.84 : 18,930.72 = 4,406.84 : x
  2. Step 2: Convert to fraction form
    12,614.84/18,930.72 = 4,406.84/x
  3. Step 3: Cross multiply
    12,614.84x = 18,930.72 × 4,406.84
  4. Step 4: Simplify right side
    12,614.84x = 83,424,654.12
  5. Step 5: Solve for x
    x = 83,424,654.12/12,614.84
  6. Step 6: Final answer
    x = 6,613.22

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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.