Home / 12,700.20-19,067.40-7,440.60

Finding the Fourth Proportional to 12,700.20, 19,067.40 and 7,440.60

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Solution

The fourth proportional to 12,700.20, 19,067.40 and 7,440.60 is: 11,170.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,700.20 : 19,067.40 = 7,440.60 : x
  2. Step 2: Convert to fraction form
    12,700.20/19,067.40 = 7,440.60/x
  3. Step 3: Cross multiply
    12,700.20x = 19,067.40 × 7,440.60
  4. Step 4: Simplify right side
    12,700.20x = 141,872,896.44
  5. Step 5: Solve for x
    x = 141,872,896.44/12,700.20
  6. Step 6: Final answer
    x = 11,170.92

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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.