Home / 12,811.68-19,219.68-4,491.36

Finding the Fourth Proportional to 12,811.68, 19,219.68 and 4,491.36

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Solution

The fourth proportional to 12,811.68, 19,219.68 and 4,491.36 is: 6,737.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,811.68 : 19,219.68 = 4,491.36 : x
  2. Step 2: Convert to fraction form
    12,811.68/19,219.68 = 4,491.36/x
  3. Step 3: Cross multiply
    12,811.68x = 19,219.68 × 4,491.36
  4. Step 4: Simplify right side
    12,811.68x = 86,322,501.96
  5. Step 5: Solve for x
    x = 86,322,501.96/12,811.68
  6. Step 6: Final answer
    x = 6,737.80

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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.