Home / 20,616.84-28,451.40-11,185.44

Finding the Fourth Proportional to 20,616.84, 28,451.40 and 11,185.44

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Solution

The fourth proportional to 20,616.84, 28,451.40 and 11,185.44 is: 15,435.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,616.84 : 28,451.40 = 11,185.44 : x
  2. Step 2: Convert to fraction form
    20,616.84/28,451.40 = 11,185.44/x
  3. Step 3: Cross multiply
    20,616.84x = 28,451.40 × 11,185.44
  4. Step 4: Simplify right side
    20,616.84x = 318,241,427.62
  5. Step 5: Solve for x
    x = 318,241,427.62/20,616.84
  6. Step 6: Final answer
    x = 15,435.99

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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.