Home / 31,431.56-43,375.56-17,285.36

Finding the Fourth Proportional to 31,431.56, 43,375.56 and 17,285.36

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Solution

The fourth proportional to 31,431.56, 43,375.56 and 17,285.36 is: 23,853.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,431.56 : 43,375.56 = 17,285.36 : x
  2. Step 2: Convert to fraction form
    31,431.56/43,375.56 = 17,285.36/x
  3. Step 3: Cross multiply
    31,431.56x = 43,375.56 × 17,285.36
  4. Step 4: Simplify right side
    31,431.56x = 749,762,169.80
  5. Step 5: Solve for x
    x = 749,762,169.80/31,431.56
  6. Step 6: Final answer
    x = 23,853.80

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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.