Home / 28,203.05-38,909.84-16,872.84

Finding the Fourth Proportional to 28,203.05, 38,909.84 and 16,872.84

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Solution

The fourth proportional to 28,203.05, 38,909.84 and 16,872.84 is: 23,278.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,203.05 : 38,909.84 = 16,872.84 : x
  2. Step 2: Convert to fraction form
    28,203.05/38,909.84 = 16,872.84/x
  3. Step 3: Cross multiply
    28,203.05x = 38,909.84 × 16,872.84
  4. Step 4: Simplify right side
    28,203.05x = 656,519,420.38
  5. Step 5: Solve for x
    x = 656,519,420.38/28,203.05
  6. Step 6: Final answer
    x = 23,278.31

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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.