Home / 20,984.55-31,451.78-14,624.99

Finding the Fourth Proportional to 20,984.55, 31,451.78 and 14,624.99

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Solution

The fourth proportional to 20,984.55, 31,451.78 and 14,624.99 is: 21,920.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.55 : 31,451.78 = 14,624.99 : x
  2. Step 2: Convert to fraction form
    20,984.55/31,451.78 = 14,624.99/x
  3. Step 3: Cross multiply
    20,984.55x = 31,451.78 × 14,624.99
  4. Step 4: Simplify right side
    20,984.55x = 459,981,965.23
  5. Step 5: Solve for x
    x = 459,981,965.23/20,984.55
  6. Step 6: Final answer
    x = 21,920.03

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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.