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Finding the Fourth Proportional to 12,164.53, 18,246.81 and 2,930.53

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Solution

The fourth proportional to 12,164.53, 18,246.81 and 2,930.53 is: 4,395.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,164.53 : 18,246.81 = 2,930.53 : x
  2. Step 2: Convert to fraction form
    12,164.53/18,246.81 = 2,930.53/x
  3. Step 3: Cross multiply
    12,164.53x = 18,246.81 × 2,930.53
  4. Step 4: Simplify right side
    12,164.53x = 53,472,857.91
  5. Step 5: Solve for x
    x = 53,472,857.91/12,164.53
  6. Step 6: Final answer
    x = 4,395.80

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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.