Home / 20,836.08-31,247.64-6,981.84

Finding the Fourth Proportional to 20,836.08, 31,247.64 and 6,981.84

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Solution

The fourth proportional to 20,836.08, 31,247.64 and 6,981.84 is: 10,470.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,836.08 : 31,247.64 = 6,981.84 : x
  2. Step 2: Convert to fraction form
    20,836.08/31,247.64 = 6,981.84/x
  3. Step 3: Cross multiply
    20,836.08x = 31,247.64 × 6,981.84
  4. Step 4: Simplify right side
    20,836.08x = 218,166,022.86
  5. Step 5: Solve for x
    x = 218,166,022.86/20,836.08
  6. Step 6: Final answer
    x = 10,470.59

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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.