Home / 20,835.28-31,246.32-6,981.04

Finding the Fourth Proportional to 20,835.28, 31,246.32 and 6,981.04

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Solution

The fourth proportional to 20,835.28, 31,246.32 and 6,981.04 is: 10,469.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,835.28 : 31,246.32 = 6,981.04 : x
  2. Step 2: Convert to fraction form
    20,835.28/31,246.32 = 6,981.04/x
  3. Step 3: Cross multiply
    20,835.28x = 31,246.32 × 6,981.04
  4. Step 4: Simplify right side
    20,835.28x = 218,131,809.77
  5. Step 5: Solve for x
    x = 218,131,809.77/20,835.28
  6. Step 6: Final answer
    x = 10,469.35

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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.