Home / 20,482.28-28,274.26-13,771.80

Finding the Fourth Proportional to 20,482.28, 28,274.26 and 13,771.80

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Solution

The fourth proportional to 20,482.28, 28,274.26 and 13,771.80 is: 19,010.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,482.28 : 28,274.26 = 13,771.80 : x
  2. Step 2: Convert to fraction form
    20,482.28/28,274.26 = 13,771.80/x
  3. Step 3: Cross multiply
    20,482.28x = 28,274.26 × 13,771.80
  4. Step 4: Simplify right side
    20,482.28x = 389,387,453.87
  5. Step 5: Solve for x
    x = 389,387,453.87/20,482.28
  6. Step 6: Final answer
    x = 19,010.94

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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.