Home / 12,107.79-18,162.72-3,342.70

Finding the Fourth Proportional to 12,107.79, 18,162.72 and 3,342.70

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Solution

The fourth proportional to 12,107.79, 18,162.72 and 3,342.70 is: 5,014.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,107.79 : 18,162.72 = 3,342.70 : x
  2. Step 2: Convert to fraction form
    12,107.79/18,162.72 = 3,342.70/x
  3. Step 3: Cross multiply
    12,107.79x = 18,162.72 × 3,342.70
  4. Step 4: Simplify right side
    12,107.79x = 60,712,524.14
  5. Step 5: Solve for x
    x = 60,712,524.14/12,107.79
  6. Step 6: Final answer
    x = 5,014.34

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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.