Home / 31,315.88-43,218.63-17,171.46

Finding the Fourth Proportional to 31,315.88, 43,218.63 and 17,171.46

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Solution

The fourth proportional to 31,315.88, 43,218.63 and 17,171.46 is: 23,698.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,315.88 : 43,218.63 = 17,171.46 : x
  2. Step 2: Convert to fraction form
    31,315.88/43,218.63 = 17,171.46/x
  3. Step 3: Cross multiply
    31,315.88x = 43,218.63 × 17,171.46
  4. Step 4: Simplify right side
    31,315.88x = 742,126,976.30
  5. Step 5: Solve for x
    x = 742,126,976.30/31,315.88
  6. Step 6: Final answer
    x = 23,698.10

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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.