Home / 31,474.77-47,188.57-18,991.85

Finding the Fourth Proportional to 31,474.77, 47,188.57 and 18,991.85

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Solution

The fourth proportional to 31,474.77, 47,188.57 and 18,991.85 is: 28,473.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,474.77 : 47,188.57 = 18,991.85 : x
  2. Step 2: Convert to fraction form
    31,474.77/47,188.57 = 18,991.85/x
  3. Step 3: Cross multiply
    31,474.77x = 47,188.57 × 18,991.85
  4. Step 4: Simplify right side
    31,474.77x = 896,197,912.25
  5. Step 5: Solve for x
    x = 896,197,912.25/31,474.77
  6. Step 6: Final answer
    x = 28,473.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.