Home / 20,426.41-28,190.48-13,725.99

Finding the Fourth Proportional to 20,426.41, 28,190.48 and 13,725.99

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Solution

The fourth proportional to 20,426.41, 28,190.48 and 13,725.99 is: 18,943.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.41 : 28,190.48 = 13,725.99 : x
  2. Step 2: Convert to fraction form
    20,426.41/28,190.48 = 13,725.99/x
  3. Step 3: Cross multiply
    20,426.41x = 28,190.48 × 13,725.99
  4. Step 4: Simplify right side
    20,426.41x = 386,942,105.62
  5. Step 5: Solve for x
    x = 386,942,105.62/20,426.41
  6. Step 6: Final answer
    x = 18,943.23

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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.