Home / 20,835.65-31,246.99-6,981.41

Finding the Fourth Proportional to 20,835.65, 31,246.99 and 6,981.41

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Solution

The fourth proportional to 20,835.65, 31,246.99 and 6,981.41 is: 10,469.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.65 : 31,246.99 = 6,981.41 : x
  2. Step 2: Convert to fraction form
    20,835.65/31,246.99 = 6,981.41/x
  3. Step 3: Cross multiply
    20,835.65x = 31,246.99 × 6,981.41
  4. Step 4: Simplify right side
    20,835.65x = 218,148,048.46
  5. Step 5: Solve for x
    x = 218,148,048.46/20,835.65
  6. Step 6: Final answer
    x = 10,469.94

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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.