Home / 20,284.82-28,001.70-12,329.62

Finding the Fourth Proportional to 20,284.82, 28,001.70 and 12,329.62

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Solution

The fourth proportional to 20,284.82, 28,001.70 and 12,329.62 is: 17,020.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,284.82 : 28,001.70 = 12,329.62 : x
  2. Step 2: Convert to fraction form
    20,284.82/28,001.70 = 12,329.62/x
  3. Step 3: Cross multiply
    20,284.82x = 28,001.70 × 12,329.62
  4. Step 4: Simplify right side
    20,284.82x = 345,250,320.35
  5. Step 5: Solve for x
    x = 345,250,320.35/20,284.82
  6. Step 6: Final answer
    x = 17,020.13

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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.