Home / 12,769.28-19,159.72-5,745.42

Finding the Fourth Proportional to 12,769.28, 19,159.72 and 5,745.42

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Solution

The fourth proportional to 12,769.28, 19,159.72 and 5,745.42 is: 8,620.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,769.28 : 19,159.72 = 5,745.42 : x
  2. Step 2: Convert to fraction form
    12,769.28/19,159.72 = 5,745.42/x
  3. Step 3: Cross multiply
    12,769.28x = 19,159.72 × 5,745.42
  4. Step 4: Simplify right side
    12,769.28x = 110,080,638.48
  5. Step 5: Solve for x
    x = 110,080,638.48/12,769.28
  6. Step 6: Final answer
    x = 8,620.74

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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.