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Finding the Fourth Proportional to 31,758.84, 43,832.90 and 18,328.22

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Solution

The fourth proportional to 31,758.84, 43,832.90 and 18,328.22 is: 25,296.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,758.84 : 43,832.90 = 18,328.22 : x
  2. Step 2: Convert to fraction form
    31,758.84/43,832.90 = 18,328.22/x
  3. Step 3: Cross multiply
    31,758.84x = 43,832.90 × 18,328.22
  4. Step 4: Simplify right side
    31,758.84x = 803,379,034.44
  5. Step 5: Solve for x
    x = 803,379,034.44/31,758.84
  6. Step 6: Final answer
    x = 25,296.23

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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.