Home / 12,777.62-19,165.01-3,418.61

Finding the Fourth Proportional to 12,777.62, 19,165.01 and 3,418.61

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Solution

The fourth proportional to 12,777.62, 19,165.01 and 3,418.61 is: 5,127.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,777.62 : 19,165.01 = 3,418.61 : x
  2. Step 2: Convert to fraction form
    12,777.62/19,165.01 = 3,418.61/x
  3. Step 3: Cross multiply
    12,777.62x = 19,165.01 × 3,418.61
  4. Step 4: Simplify right side
    12,777.62x = 65,517,581.92
  5. Step 5: Solve for x
    x = 65,517,581.92/12,777.62
  6. Step 6: Final answer
    x = 5,127.53

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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.