Home / 12,910.20-19,366.22-5,406.20

Finding the Fourth Proportional to 12,910.20, 19,366.22 and 5,406.20

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Solution

The fourth proportional to 12,910.20, 19,366.22 and 5,406.20 is: 8,109.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,910.20 : 19,366.22 = 5,406.20 : x
  2. Step 2: Convert to fraction form
    12,910.20/19,366.22 = 5,406.20/x
  3. Step 3: Cross multiply
    12,910.20x = 19,366.22 × 5,406.20
  4. Step 4: Simplify right side
    12,910.20x = 104,697,658.56
  5. Step 5: Solve for x
    x = 104,697,658.56/12,910.20
  6. Step 6: Final answer
    x = 8,109.69

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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.