Home / 31,606.80-43,618.65-18,178.05

Finding the Fourth Proportional to 31,606.80, 43,618.65 and 18,178.05

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Solution

The fourth proportional to 31,606.80, 43,618.65 and 18,178.05 is: 25,086.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,606.80 : 43,618.65 = 18,178.05 : x
  2. Step 2: Convert to fraction form
    31,606.80/43,618.65 = 18,178.05/x
  3. Step 3: Cross multiply
    31,606.80x = 43,618.65 × 18,178.05
  4. Step 4: Simplify right side
    31,606.80x = 792,902,000.63
  5. Step 5: Solve for x
    x = 792,902,000.63/31,606.80
  6. Step 6: Final answer
    x = 25,086.44

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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.