Home / 12,880.86-19,322.49-3,996.26

Finding the Fourth Proportional to 12,880.86, 19,322.49 and 3,996.26

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Solution

The fourth proportional to 12,880.86, 19,322.49 and 3,996.26 is: 5,994.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,880.86 : 19,322.49 = 3,996.26 : x
  2. Step 2: Convert to fraction form
    12,880.86/19,322.49 = 3,996.26/x
  3. Step 3: Cross multiply
    12,880.86x = 19,322.49 × 3,996.26
  4. Step 4: Simplify right side
    12,880.86x = 77,217,649.83
  5. Step 5: Solve for x
    x = 77,217,649.83/12,880.86
  6. Step 6: Final answer
    x = 5,994.76

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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.