Home / 31,980.45-47,984.49-17,172.03

Finding the Fourth Proportional to 31,980.45, 47,984.49 and 17,172.03

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Solution

The fourth proportional to 31,980.45, 47,984.49 and 17,172.03 is: 25,765.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,980.45 : 47,984.49 = 17,172.03 : x
  2. Step 2: Convert to fraction form
    31,980.45/47,984.49 = 17,172.03/x
  3. Step 3: Cross multiply
    31,980.45x = 47,984.49 × 17,172.03
  4. Step 4: Simplify right side
    31,980.45x = 823,991,101.81
  5. Step 5: Solve for x
    x = 823,991,101.81/31,980.45
  6. Step 6: Final answer
    x = 25,765.46

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.