Home / 31,827.53-43,917.12-18,396.20

Finding the Fourth Proportional to 31,827.53, 43,917.12 and 18,396.20

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Solution

The fourth proportional to 31,827.53, 43,917.12 and 18,396.20 is: 25,383.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,827.53 : 43,917.12 = 18,396.20 : x
  2. Step 2: Convert to fraction form
    31,827.53/43,917.12 = 18,396.20/x
  3. Step 3: Cross multiply
    31,827.53x = 43,917.12 × 18,396.20
  4. Step 4: Simplify right side
    31,827.53x = 807,907,903.36
  5. Step 5: Solve for x
    x = 807,907,903.36/31,827.53
  6. Step 6: Final answer
    x = 25,383.94

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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.