Home / 20,577.97-28,396.12-12,080.44

Finding the Fourth Proportional to 20,577.97, 28,396.12 and 12,080.44

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Solution

The fourth proportional to 20,577.97, 28,396.12 and 12,080.44 is: 16,670.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,577.97 : 28,396.12 = 12,080.44 : x
  2. Step 2: Convert to fraction form
    20,577.97/28,396.12 = 12,080.44/x
  3. Step 3: Cross multiply
    20,577.97x = 28,396.12 × 12,080.44
  4. Step 4: Simplify right side
    20,577.97x = 343,037,651.84
  5. Step 5: Solve for x
    x = 343,037,651.84/20,577.97
  6. Step 6: Final answer
    x = 16,670.14

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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.