Home / 31,307.94-43,203.60-18,739.62

Finding the Fourth Proportional to 31,307.94, 43,203.60 and 18,739.62

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Solution

The fourth proportional to 31,307.94, 43,203.60 and 18,739.62 is: 25,859.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,307.94 : 43,203.60 = 18,739.62 : x
  2. Step 2: Convert to fraction form
    31,307.94/43,203.60 = 18,739.62/x
  3. Step 3: Cross multiply
    31,307.94x = 43,203.60 × 18,739.62
  4. Step 4: Simplify right side
    31,307.94x = 809,619,046.63
  5. Step 5: Solve for x
    x = 809,619,046.63/31,307.94
  6. Step 6: Final answer
    x = 25,859.86

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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.