Home / 26,900.80-40,322.40-12,107.20

Finding the Fourth Proportional to 26,900.80, 40,322.40 and 12,107.20

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Solution

The fourth proportional to 26,900.80, 40,322.40 and 12,107.20 is: 18,147.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,900.80 : 40,322.40 = 12,107.20 : x
  2. Step 2: Convert to fraction form
    26,900.80/40,322.40 = 12,107.20/x
  3. Step 3: Cross multiply
    26,900.80x = 40,322.40 × 12,107.20
  4. Step 4: Simplify right side
    26,900.80x = 488,191,361.28
  5. Step 5: Solve for x
    x = 488,191,361.28/26,900.80
  6. Step 6: Final answer
    x = 18,147.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.