Home / 31,664.36-43,687.42-18,235.28

Finding the Fourth Proportional to 31,664.36, 43,687.42 and 18,235.28

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Solution

The fourth proportional to 31,664.36, 43,687.42 and 18,235.28 is: 25,159.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,664.36 : 43,687.42 = 18,235.28 : x
  2. Step 2: Convert to fraction form
    31,664.36/43,687.42 = 18,235.28/x
  3. Step 3: Cross multiply
    31,664.36x = 43,687.42 × 18,235.28
  4. Step 4: Simplify right side
    31,664.36x = 796,652,336.18
  5. Step 5: Solve for x
    x = 796,652,336.18/31,664.36
  6. Step 6: Final answer
    x = 25,159.27

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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.