Home / 20,431.69-30,629.03-14,194.62

Finding the Fourth Proportional to 20,431.69, 30,629.03 and 14,194.62

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Solution

The fourth proportional to 20,431.69, 30,629.03 and 14,194.62 is: 21,279.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,431.69 : 30,629.03 = 14,194.62 : x
  2. Step 2: Convert to fraction form
    20,431.69/30,629.03 = 14,194.62/x
  3. Step 3: Cross multiply
    20,431.69x = 30,629.03 × 14,194.62
  4. Step 4: Simplify right side
    20,431.69x = 434,767,441.82
  5. Step 5: Solve for x
    x = 434,767,441.82/20,431.69
  6. Step 6: Final answer
    x = 21,279.07

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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.