Home / 31,686.30-43,736.84-18,266.54

Finding the Fourth Proportional to 31,686.30, 43,736.84 and 18,266.54

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Solution

The fourth proportional to 31,686.30, 43,736.84 and 18,266.54 is: 25,213.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,686.30 : 43,736.84 = 18,266.54 : x
  2. Step 2: Convert to fraction form
    31,686.30/43,736.84 = 18,266.54/x
  3. Step 3: Cross multiply
    31,686.30x = 43,736.84 × 18,266.54
  4. Step 4: Simplify right side
    31,686.30x = 798,920,737.33
  5. Step 5: Solve for x
    x = 798,920,737.33/31,686.30
  6. Step 6: Final answer
    x = 25,213.44

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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.