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Finding the Fourth Proportional to 31,665.84, 43,706.08 and 18,244.84

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Solution

The fourth proportional to 31,665.84, 43,706.08 and 18,244.84 is: 25,182.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,665.84 : 43,706.08 = 18,244.84 : x
  2. Step 2: Convert to fraction form
    31,665.84/43,706.08 = 18,244.84/x
  3. Step 3: Cross multiply
    31,665.84x = 43,706.08 × 18,244.84
  4. Step 4: Simplify right side
    31,665.84x = 797,410,436.63
  5. Step 5: Solve for x
    x = 797,410,436.63/31,665.84
  6. Step 6: Final answer
    x = 25,182.04

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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.