Home / 31,520.40-43,485.96-18,086.80

Finding the Fourth Proportional to 31,520.40, 43,485.96 and 18,086.80

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Solution

The fourth proportional to 31,520.40, 43,485.96 and 18,086.80 is: 24,952.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,520.40 : 43,485.96 = 18,086.80 : x
  2. Step 2: Convert to fraction form
    31,520.40/43,485.96 = 18,086.80/x
  3. Step 3: Cross multiply
    31,520.40x = 43,485.96 × 18,086.80
  4. Step 4: Simplify right side
    31,520.40x = 786,521,861.33
  5. Step 5: Solve for x
    x = 786,521,861.33/31,520.40
  6. Step 6: Final answer
    x = 24,952.79

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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.