Home / 20,956.29-31,438.33-6,917.30

Finding the Fourth Proportional to 20,956.29, 31,438.33 and 6,917.30

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Solution

The fourth proportional to 20,956.29, 31,438.33 and 6,917.30 is: 10,377.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,956.29 : 31,438.33 = 6,917.30 : x
  2. Step 2: Convert to fraction form
    20,956.29/31,438.33 = 6,917.30/x
  3. Step 3: Cross multiply
    20,956.29x = 31,438.33 × 6,917.30
  4. Step 4: Simplify right side
    20,956.29x = 217,468,303.52
  5. Step 5: Solve for x
    x = 217,468,303.52/20,956.29
  6. Step 6: Final answer
    x = 10,377.23

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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.