Home / 31,678.20-43,725.42-18,259.02

Finding the Fourth Proportional to 31,678.20, 43,725.42 and 18,259.02

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Solution

The fourth proportional to 31,678.20, 43,725.42 and 18,259.02 is: 25,202.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,678.20 : 43,725.42 = 18,259.02 : x
  2. Step 2: Convert to fraction form
    31,678.20/43,725.42 = 18,259.02/x
  3. Step 3: Cross multiply
    31,678.20x = 43,725.42 × 18,259.02
  4. Step 4: Simplify right side
    31,678.20x = 798,383,318.29
  5. Step 5: Solve for x
    x = 798,383,318.29/31,678.20
  6. Step 6: Final answer
    x = 25,202.93

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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.