Home / 20,828.91-31,246.60-6,785.65

Finding the Fourth Proportional to 20,828.91, 31,246.60 and 6,785.65

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Solution

The fourth proportional to 20,828.91, 31,246.60 and 6,785.65 is: 10,179.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,828.91 : 31,246.60 = 6,785.65 : x
  2. Step 2: Convert to fraction form
    20,828.91/31,246.60 = 6,785.65/x
  3. Step 3: Cross multiply
    20,828.91x = 31,246.60 × 6,785.65
  4. Step 4: Simplify right side
    20,828.91x = 212,028,491.29
  5. Step 5: Solve for x
    x = 212,028,491.29/20,828.91
  6. Step 6: Final answer
    x = 10,179.53

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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.