Home / 31,550.88-43,540.75-20,392.32

Finding the Fourth Proportional to 31,550.88, 43,540.75 and 20,392.32

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Solution

The fourth proportional to 31,550.88, 43,540.75 and 20,392.32 is: 28,141.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,550.88 : 43,540.75 = 20,392.32 : x
  2. Step 2: Convert to fraction form
    31,550.88/43,540.75 = 20,392.32/x
  3. Step 3: Cross multiply
    31,550.88x = 43,540.75 × 20,392.32
  4. Step 4: Simplify right side
    31,550.88x = 887,896,638.36
  5. Step 5: Solve for x
    x = 887,896,638.36/31,550.88
  6. Step 6: Final answer
    x = 28,141.74

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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.