Home / 13,178.96-19,765.58-4,173.78

Finding the Fourth Proportional to 13,178.96, 19,765.58 and 4,173.78

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Solution

The fourth proportional to 13,178.96, 19,765.58 and 4,173.78 is: 6,259.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,178.96 : 19,765.58 = 4,173.78 : x
  2. Step 2: Convert to fraction form
    13,178.96/19,765.58 = 4,173.78/x
  3. Step 3: Cross multiply
    13,178.96x = 19,765.58 × 4,173.78
  4. Step 4: Simplify right side
    13,178.96x = 82,497,161.62
  5. Step 5: Solve for x
    x = 82,497,161.62/13,178.96
  6. Step 6: Final answer
    x = 6,259.77

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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.