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Finding the Fourth Proportional to 31,668.66, 43,700.94 and 17,520.66

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Solution

The fourth proportional to 31,668.66, 43,700.94 and 17,520.66 is: 24,177.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,668.66 : 43,700.94 = 17,520.66 : x
  2. Step 2: Convert to fraction form
    31,668.66/43,700.94 = 17,520.66/x
  3. Step 3: Cross multiply
    31,668.66x = 43,700.94 × 17,520.66
  4. Step 4: Simplify right side
    31,668.66x = 765,669,311.42
  5. Step 5: Solve for x
    x = 765,669,311.42/31,668.66
  6. Step 6: Final answer
    x = 24,177.51

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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.