Home / 20,984.31-28,969.05-16,193.49

Finding the Fourth Proportional to 20,984.31, 28,969.05 and 16,193.49

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Solution

The fourth proportional to 20,984.31, 28,969.05 and 16,193.49 is: 22,355.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.31 : 28,969.05 = 16,193.49 : x
  2. Step 2: Convert to fraction form
    20,984.31/28,969.05 = 16,193.49/x
  3. Step 3: Cross multiply
    20,984.31x = 28,969.05 × 16,193.49
  4. Step 4: Simplify right side
    20,984.31x = 469,109,947.18
  5. Step 5: Solve for x
    x = 469,109,947.18/20,984.31
  6. Step 6: Final answer
    x = 22,355.27

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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.