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Finding the Fourth Proportional to 29,662.81, 40,934.92 and 18,329.72

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Solution

The fourth proportional to 29,662.81, 40,934.92 and 18,329.72 is: 25,295.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,662.81 : 40,934.92 = 18,329.72 : x
  2. Step 2: Convert to fraction form
    29,662.81/40,934.92 = 18,329.72/x
  3. Step 3: Cross multiply
    29,662.81x = 40,934.92 × 18,329.72
  4. Step 4: Simplify right side
    29,662.81x = 750,325,520.82
  5. Step 5: Solve for x
    x = 750,325,520.82/29,662.81
  6. Step 6: Final answer
    x = 25,295.16

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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.