Home / 20,956.92-31,439.27-6,917.93

Finding the Fourth Proportional to 20,956.92, 31,439.27 and 6,917.93

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Solution

The fourth proportional to 20,956.92, 31,439.27 and 6,917.93 is: 10,378.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.92 : 31,439.27 = 6,917.93 : x
  2. Step 2: Convert to fraction form
    20,956.92/31,439.27 = 6,917.93/x
  3. Step 3: Cross multiply
    20,956.92x = 31,439.27 × 6,917.93
  4. Step 4: Simplify right side
    20,956.92x = 217,494,477.33
  5. Step 5: Solve for x
    x = 217,494,477.33/20,956.92
  6. Step 6: Final answer
    x = 10,378.17

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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.