Home / 31,187.48-43,039.70-17,040.02

Finding the Fourth Proportional to 31,187.48, 43,039.70 and 17,040.02

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Solution

The fourth proportional to 31,187.48, 43,039.70 and 17,040.02 is: 23,515.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,187.48 : 43,039.70 = 17,040.02 : x
  2. Step 2: Convert to fraction form
    31,187.48/43,039.70 = 17,040.02/x
  3. Step 3: Cross multiply
    31,187.48x = 43,039.70 × 17,040.02
  4. Step 4: Simplify right side
    31,187.48x = 733,397,048.40
  5. Step 5: Solve for x
    x = 733,397,048.40/31,187.48
  6. Step 6: Final answer
    x = 23,515.76

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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.