Home / 20,942.25-28,887.33-13,773

Finding the Fourth Proportional to 20,942.25, 28,887.33 and 13,773

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Solution

The fourth proportional to 20,942.25, 28,887.33 and 13,773 is: 18,998.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,942.25 : 28,887.33 = 13,773 : x
  2. Step 2: Convert to fraction form
    20,942.25/28,887.33 = 13,773/x
  3. Step 3: Cross multiply
    20,942.25x = 28,887.33 × 13,773
  4. Step 4: Simplify right side
    20,942.25x = 397,865,196.09
  5. Step 5: Solve for x
    x = 397,865,196.09/20,942.25
  6. Step 6: Final answer
    x = 18,998.21

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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.