Home / 31,289.96-43,169.15-21,727.31

Finding the Fourth Proportional to 31,289.96, 43,169.15 and 21,727.31

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Solution

The fourth proportional to 31,289.96, 43,169.15 and 21,727.31 is: 29,976.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,289.96 : 43,169.15 = 21,727.31 : x
  2. Step 2: Convert to fraction form
    31,289.96/43,169.15 = 21,727.31/x
  3. Step 3: Cross multiply
    31,289.96x = 43,169.15 × 21,727.31
  4. Step 4: Simplify right side
    31,289.96x = 937,949,342.96
  5. Step 5: Solve for x
    x = 937,949,342.96/31,289.96
  6. Step 6: Final answer
    x = 29,976.05

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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.