Home / 12,821.74-19,207.68-8,425.84

Finding the Fourth Proportional to 12,821.74, 19,207.68 and 8,425.84

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Solution

The fourth proportional to 12,821.74, 19,207.68 and 8,425.84 is: 12,622.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,821.74 : 19,207.68 = 8,425.84 : x
  2. Step 2: Convert to fraction form
    12,821.74/19,207.68 = 8,425.84/x
  3. Step 3: Cross multiply
    12,821.74x = 19,207.68 × 8,425.84
  4. Step 4: Simplify right side
    12,821.74x = 161,840,838.45
  5. Step 5: Solve for x
    x = 161,840,838.45/12,821.74
  6. Step 6: Final answer
    x = 12,622.38

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1.5x scale

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.