Home / 31,391.48-43,301.05-18,636.01

Finding the Fourth Proportional to 31,391.48, 43,301.05 and 18,636.01

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Solution

The fourth proportional to 31,391.48, 43,301.05 and 18,636.01 is: 25,706.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,391.48 : 43,301.05 = 18,636.01 : x
  2. Step 2: Convert to fraction form
    31,391.48/43,301.05 = 18,636.01/x
  3. Step 3: Cross multiply
    31,391.48x = 43,301.05 × 18,636.01
  4. Step 4: Simplify right side
    31,391.48x = 806,958,645.97
  5. Step 5: Solve for x
    x = 806,958,645.97/31,391.48
  6. Step 6: Final answer
    x = 25,706.29

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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.