Home / 20,426.09-30,620.66-14,189.03

Finding the Fourth Proportional to 20,426.09, 30,620.66 and 14,189.03

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Solution

The fourth proportional to 20,426.09, 30,620.66 and 14,189.03 is: 21,270.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.09 : 30,620.66 = 14,189.03 : x
  2. Step 2: Convert to fraction form
    20,426.09/30,620.66 = 14,189.03/x
  3. Step 3: Cross multiply
    20,426.09x = 30,620.66 × 14,189.03
  4. Step 4: Simplify right side
    20,426.09x = 434,477,239.31
  5. Step 5: Solve for x
    x = 434,477,239.31/20,426.09
  6. Step 6: Final answer
    x = 21,270.71

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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.