Home / 31,315.96-43,218.75-17,171.56

Finding the Fourth Proportional to 31,315.96, 43,218.75 and 17,171.56

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Solution

The fourth proportional to 31,315.96, 43,218.75 and 17,171.56 is: 23,698.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,315.96 : 43,218.75 = 17,171.56 : x
  2. Step 2: Convert to fraction form
    31,315.96/43,218.75 = 17,171.56/x
  3. Step 3: Cross multiply
    31,315.96x = 43,218.75 × 17,171.56
  4. Step 4: Simplify right side
    31,315.96x = 742,133,358.75
  5. Step 5: Solve for x
    x = 742,133,358.75/31,315.96
  6. Step 6: Final answer
    x = 23,698.25

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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.