Home / 20,958.37-31,437.59-6,919.18

Finding the Fourth Proportional to 20,958.37, 31,437.59 and 6,919.18

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Solution

The fourth proportional to 20,958.37, 31,437.59 and 6,919.18 is: 10,378.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,958.37 : 31,437.59 = 6,919.18 : x
  2. Step 2: Convert to fraction form
    20,958.37/31,437.59 = 6,919.18/x
  3. Step 3: Cross multiply
    20,958.37x = 31,437.59 × 6,919.18
  4. Step 4: Simplify right side
    20,958.37x = 217,522,230.79
  5. Step 5: Solve for x
    x = 217,522,230.79/20,958.37
  6. Step 6: Final answer
    x = 10,378.78

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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.