Home / 31,687.59-43,739.82-18,264.21

Finding the Fourth Proportional to 31,687.59, 43,739.82 and 18,264.21

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Solution

The fourth proportional to 31,687.59, 43,739.82 and 18,264.21 is: 25,210.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,687.59 : 43,739.82 = 18,264.21 : x
  2. Step 2: Convert to fraction form
    31,687.59/43,739.82 = 18,264.21/x
  3. Step 3: Cross multiply
    31,687.59x = 43,739.82 × 18,264.21
  4. Step 4: Simplify right side
    31,687.59x = 798,873,257.84
  5. Step 5: Solve for x
    x = 798,873,257.84/31,687.59
  6. Step 6: Final answer
    x = 25,210.92

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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.