Home / 20,400.84-28,178.82-16,828.74

Finding the Fourth Proportional to 20,400.84, 28,178.82 and 16,828.74

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Solution

The fourth proportional to 20,400.84, 28,178.82 and 16,828.74 is: 23,244.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,400.84 : 28,178.82 = 16,828.74 : x
  2. Step 2: Convert to fraction form
    20,400.84/28,178.82 = 16,828.74/x
  3. Step 3: Cross multiply
    20,400.84x = 28,178.82 × 16,828.74
  4. Step 4: Simplify right side
    20,400.84x = 474,214,035.29
  5. Step 5: Solve for x
    x = 474,214,035.29/20,400.84
  6. Step 6: Final answer
    x = 23,244.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.