Home / 31,530.40-43,512.29-17,383.75

Finding the Fourth Proportional to 31,530.40, 43,512.29 and 17,383.75

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Solution

The fourth proportional to 31,530.40, 43,512.29 and 17,383.75 is: 23,989.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,530.40 : 43,512.29 = 17,383.75 : x
  2. Step 2: Convert to fraction form
    31,530.40/43,512.29 = 17,383.75/x
  3. Step 3: Cross multiply
    31,530.40x = 43,512.29 × 17,383.75
  4. Step 4: Simplify right side
    31,530.40x = 756,406,771.29
  5. Step 5: Solve for x
    x = 756,406,771.29/31,530.40
  6. Step 6: Final answer
    x = 23,989.76

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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.