Home / 31,371.06-43,273.04-18,615.84

Finding the Fourth Proportional to 31,371.06, 43,273.04 and 18,615.84

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Solution

The fourth proportional to 31,371.06, 43,273.04 and 18,615.84 is: 25,678.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,371.06 : 43,273.04 = 18,615.84 : x
  2. Step 2: Convert to fraction form
    31,371.06/43,273.04 = 18,615.84/x
  3. Step 3: Cross multiply
    31,371.06x = 43,273.04 × 18,615.84
  4. Step 4: Simplify right side
    31,371.06x = 805,563,772.59
  5. Step 5: Solve for x
    x = 805,563,772.59/31,371.06
  6. Step 6: Final answer
    x = 25,678.56

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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.